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Demco Stay-IN-Play DUO Supplemental Braking System w/ Wireless Coachlink Monitor - Proportional

Demco Stay-IN-Play DUO Supplemental Braking System w/ Wireless Coachlink Monitor - Proportional

Item # DM86VR
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Tow Bar Braking Systems

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Demco Power Assist Brake Compatible Tow Bar Braking Systems - DM86VR
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Product Expert Mike S

Is this right for you? Product Expert Mike S says:

Yes, if you:

  • Don’t have time to waste setting up a portable system before every trip
  • Like being able to easily see when the towed vehicle's brakes are being applied
  • Want a permanent system that’s easy to install

No, if you:

  • Upgrade your towed car every few years
Get automatic, proportional braking with a system that never has to be removed, replaced, or reset. The DUO activates when your RV brake lights go on and the inertia sensor detects deceleration. No false braking. Wireless braking monitor included. Lowest Prices for the best tow bar braking systems from Demco. Demco Stay-IN-Play DUO Supplemental Braking System w/ Wireless Coachlink Monitor - Proportional part number DM86VR can be ordered online at or call 800-298-1624 for expert service.
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  • Reviews (257)
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Demco Tow Bar Braking Systems - DM86VR

  • Brake Systems
  • Proportional System
  • Hydraulic Brakes
  • Fixed System
  • Demco
  • One Time Set-Up
  • Power Assist Brake Compatible

Get automatic, proportional braking with a system that never has to be removed, replaced, or reset. The DUO activates when your RV brake lights go on and the inertia sensor detects deceleration. No false braking. Wireless braking monitor included.


  • Supplemental braking system applies towed vehicle's brakes in proportion to braking action of RV
    • Towed car's brakes are activated at the same time and with the same intensity as those in your motorhome
  • Inertia sensor detects deceleration and signals system to activate brake pedal with proportionate amount of pressure
  • No false braking
    • Coach brake light must be on for system to activate towed car's brakes
  • Sensitivity control on the inertia sensor lets you regulate how aggressively the towed car's brakes activate
  • One-time setup - no need to remove or to activate each time you tow
    • Operating unit and actuating cylinder stay hidden so everything is out of your way when driving
    • Inertia sensor mounts in the cab of the vehicle
    • System automatically functions when towed vehicle is hitched to RV
  • Wireless braking monitor mounts in your RV and alerts you when the brakes are being applied in the towed car
    • Transmitter connects to towed car's brake light switch to ensure proper reading
    • LED lights blink and are easily visible while you are driving
    • Audio tone provides a secondary, audible alert
  • Vacuum pump restores towed car's vacuum after each braking event
    • Less force is needed to move the brake pedal in the car, resulting in more natural braking and less risk of damage
    • Compatible with vehicles that have continuous-power-assist brakes
  • Breakaway included
  • Necessary installation components and instructions included
  • Made in the USA


  • Operating unit dimensions: 8" long x 5" wide x 2-1/4" tall
  • 5-Year warranty

A supplemental braking system is a must when towing a car or truck behind your RV. Without it, the weight of the towed car can create a safety hazard, strain your RV's brakes, or affect your RV's warranty. Most states require a supplemental braking system.

Automatic, Proportional Braking

There are many supplemental braking systems available to RV owners who choose to tow a car. Stay-IN-Play DUO combines the best features into a single system that is both automatic and fully proportional. This system relies not only on your towed car's momentum to activate, but also on your RV's brake light signal. As a result, the DUO will automatically activate any time you engage your RV's brakes, so long as there is enough deceleration for the system to detect. And when it does activate, your towed car's brakes will engage with an intensity that matches the slowing or stopping action of your RV.

An inertia-sensing mercury switch inside the DUO's controller is what makes this system proportional. This switch reads and interprets changes in forward momentum that occur when your towing setup decelerates. As your RV and car slow down, this switch sends a signal to activate your towed vehicle's brake pedal with an intensity that matches the deceleration of your RV. The result is even braking across your towing setup. Whether you lightly tap the brakes in your RV or apply them hard in a panic situation, your towed car's brakes will be applied proportionately.

Dual Activation Signals

G Force Controller

The G-Force controller is responsible for sending the signal that activates the brakes in your towed car. When the coach brake lights come on, the tow bar wiring sends a signal to this controller. This signal powers the internal, inertia-sensing mercury switch, enabling it to detect deceleration. If a change in forward momentum is detected, the G-Force controller initiates the braking process by sending an activation signal to the system's operating unit.

If the mercury switch is powered but there is no change in momentum, the system will not activate the towed car's brakes. Likewise, if a decrease in forward momentum occurs but there is no brake light signal from the RV, the inertia sensor will not be able to register the deceleration, and the system will not activate the towed car's brakes.

Because the DUO will not work without your RV brakes being applied, there is no false braking. When you downshift in your RV without applying the brakes, the DUO will not mistakenly depress your towed car's brake pedal because that first activation signal is not there. And because there is no time delay, this proportional system delivers instant braking in an emergency.

Note: The G-Force controller mounts in the towed car and must be pointed it in the direction of travel - with the toggle switch facing the rear of your vehicle - for the internal sensor to function properly.

Sensitivity Adjustment

You can adjust the sensitivity of the inertia-sensing mercury switch with a knob on the front of the G-Force controller. Adjusting the sensitivity lets you decide how intense the change in momentum must be for the sensor to respond. Adjust it to fit your personal preference so that you can get a customized braking experience. Set the sensitivity low and the DUO will only respond when you forcibly step on your RV's brake pedal. Set the sensitivity high and it will respond when you merely tap your RV's brakes.

To fine-tune the sensitivity, first move the knob all the way to its most sensitive setting. From there, you can apply the coach brakes and gradually move the knob until you get the setting right where you want it. You only need to set the sensitivity upon initial setup.

Permanent Installation with Concealed Components

Operating Unit

The operating unit receives the signal from the G-Force controller to activate. It then delivers air through a hose to the actuating cylinder, which depresses the towed car's brake pedal with a pressure that ensures your car will brake in proportion to the deceleration of your RV.

DUO Under Hood

Once you install the Stay-IN-Play DUO's operating unit under the hood of your towed vehicle, it stays concealed. Not only will it be installed and ready for the next time you want to tow your car, but it will also be out of the way so that you won't notice it when you drive your car normally. In addition, there is no need to constantly set up or remove this system. As a result, you don't need to worry about where to store the components when you're not towing.

Actuating Cylinder

Small Cylinder

The actuating cylinder depresses your towed car's brake pedal upon receiving air from the operating unit. This small cylinder stays mounted on the arm of your towed car's brake pedal at all times and will not interfere with braking while driving.

Actuator on Pedal

Mount this cylinder so that it is perpendicular to the firewall when you depress the brake pedal. A clamp anchors the actuator to the firewall.

To connect the actuating cylinder to the operating unit, you will need to run the included air hose through your towed car's firewall. You can usually create the necessary, small opening without drilling. In most instances, you can cut a slit in the hood release cable grommet. Simply cut the end of the air line at an angle to poke it through the slit.

Vacuum Pressure Creates Smooth Braking

Normally, when you activate the brakes in your vehicle, a vacuum multiplies the pressure you apply to your brake pedal, creating the force necessary to stop the full weight of the moving car. On most cars and trucks, this vacuum-assist function does not work when the engine is off. As a result, many supplemental braking systems on the market have to use an excessive amount of pressure to effectively depress the towed car's brake pedal.

The Stay-IN-Play DUO's operating unit ties into your car's vacuum line and uses a built-in vacuum pump to activate the vacuum-assist function of your car's brakes when it's being towed. As a result, the actuating cylinder of the Stay-IN-Play DUO does not need to apply extreme force to the brake pedal to achieve proper braking. The Stay-IN-Play DUO will replenish your towed car's vacuum after each braking event so that you will get smooth, even braking every time.

Built-In Safety Features

Most supplemental braking systems have monitors that tell you when the braking system is activated, regardless of whether or not the towed car's brake pedal is actually being depressed. This means that you might receive an alert telling you that your car is braking when it really isn't. But with the Stay-IN-Play DUO, you get Demco's wireless Coachlink monitoring system. This system ties into the brake light switch on your towed car so that you'll be notified only when your towed car's brake pedal is being engaged. No false notifications.

Demco Coachlink installed

The Coachlink monitor mounts in your RV, plugging easily into your 12V accessory socket for power. The built-in LEDs will illuminate to inform you when your towed car is braking. And an audible alert - which can be easily turned off, if you'd prefer - serves as a backup notification. To receive these notifications, just install the transmitter in your towed car. No additional wiring connections are needed between your car and RV as all communication happens wirelessly.

The breakaway system ensures that your car will come safely to a stop if it accidentally detaches from the RV while you are towing. A switch mounts to the front of the towed vehicle. This switch - which is wired into the operating unit - includes a pin that connects to your RV's hitch receiver with a breakaway cable. If the car separates, the cable pulls the pin from the switch, causing a signal to be sent to the operating unit.

9599018 Demco SBS - (Formerly SMI) Stay-IN-Play DUO Supplemental Proportional Braking System with Coach Link Indication System

Installation Details DM86VR Installation instructionsAlternate Instructions DM86VR Installation instructions

This Product Fits The Following Vehicles

Customer Reviews

Demco Stay-IN-Play DUO Supplemental Braking System w/ Wireless Coachlink Monitor - Proportional - DM86VR

Average Customer Rating:  4.8 out of 5 stars   (257 Customer Reviews)

Get automatic, proportional braking with a system that never has to be removed, replaced, or reset. The DUO activates when your RV brake lights go on and the inertia sensor detects deceleration. No false braking. Wireless braking monitor included.

- DM86VR

These installation photos are for the Demco Duo Play braking system install on a 2018 Ford Fusion Platinum Energy with push button start.

- DM86VR

This is a really nice braking system. It works EXACTLY as described. Engine breaking does not trigger breaking (because it's tied into the break light circuit). And breaking truly is proportional. Light braking and it does not engage activate braking. The remote wireless coach receiver shows you how hard the car is breaking, and IS proportional to the breaking in the Coach. When the car is breaking the wireless receiver shows you, at three levels (the number of lights lit from one light to three) how hard the towed is braking. i HIGHLY recommend the wireless unit for breaking notification. Instructions were very clear. I studied my 2004 Pontiac Vibe (same as Toyota Matrix), and watched a bunch of online videos on installing this product. This is a particularly good car for a toad, because it is so light. (2700 lbs curb weight -- and it rolls really freely). Installation was particularly painful under the dash where (as a tall person) I had to contort myself into all kinds of uncomfortable shapes with various padding) to reach up under the dash panel . There is just no easy way I could find to remove the lower dash panel without taking about whole dash board. So just figuring out the cold side of the break switch was very difficult. It was impossible to get a probe on the break light switch plug. I ended up clipping a wire junction connector on to the (green wire coming of the brake switch after unplugging the wire harness) and then probing that after plugging it back in. I guessed right, It's the green wire that is the cold side of the switch. For someone who reads this you don't have to guess. I've done it for you On this car I was concerned about going through the firewall and puncturing the break booster when mounting the cable terminal for the actuating cylinder. In the end, where I needed to go through the firewall was nowhere near the booster. It also turned out trying to use the self taping screws was just too hard. I wanted to use the reinforcing plate, but ended up loosing it under the carpeting. Finally I decided to just drill a 1/4" hole through the firewall (just northwest of a little dimple in the firewall), and bolt the cable cable terminal to the fire wall with a 1/4x20 combo head machine screw, and a fender washer, lock washer, and nut on the engine side of the firewall. I put silicone on the washers and nut, to prevent corrosion. I had just enough room under the car to get a wrench onto it. It would have been nice to have a car lift in my garage, but I did this work by blocking the car up on jack stands. My son held the bolt on the inside of the car. while I tightened the nut on the engine side of the firewall. Another problem was: where to mount the operating unit in the engine compartment? I struggled with this until I found an online video of an installation on a Honda, where the tech mounted the operating unit to the engine cover. This worked out well, and made for easy routing of the vacuum lines both to the vacuum line between the engine and the brake booster, and through the firewall grommet to the actuating cylinder. I mounted the wireless sending unit on the dash at the driver's A pillar, and the control unit on the passenger side, where there was much more room, routing the wires behind the center console over the the drivers side to go through the firewall. Calibration (adjusting the control unit position) worked exactly as describe. I set it and I was done. In the end, though a painful install process, ESPECIALLY above the foot pedals under the dash, I know I am going to LOVE this system. To setup for towing: just flick the switch on the control unit, and hook up the car. No other special setup is required.

- DM86VR

Settings for proportional braking on this unit is critical. If the compressor runs too long (by way of the setting being too sensitive) , it draws too many amps and blows the unit fuse. In turn, the system quits working. This makes me wonder what would actually happen on a break away. For me, it was marginal if I needed the system given the light weight of my small tow car - so even with the adjustment on when the system breaking, it works ok.

I contacted the manufacturer about the issue with blowing fuses. He said, the most common reason for blown fuses with this controller is when it is not set correctly. The system is designed to use the brake signal from the coach and the forward inertia. The pump should only turn on when these signals are present. I would go through step 12 in the instructions again just to be sure that everything is working properly.
-- Etrailer Expert Sierra K - 12/17/2021

- DM86VR

Great product and thanks to for the excellent videos detailing how to install the Demco Stay-In-Play Duo braking system. As a result of watching all of the available videos, I learned that there where a couple of different ways to install the system in our Jeep Wranglers. The first installation I did was in our 2019 Wrangler and that was super easy following the one video on your website. The second installation of the system was not as easy because our 2021 Wrangler has a manual transmission and required having to drill a hole in the firewall/floor board to run the wiring and vacuum tube from the passenger compartment to the engine area. If ever has an installation on a Jeep Wrangler with a manual transmission to perform, hopefully they will video tape that installation to guide customers with Jeeps with manual transmissions. I think's idea of mounting the control box on the fuse box is by far the cleanest and easiest way to install the Demco braking system. I also followed's videos for installing the brake light system and the base plate on both our Wranglers and could not be happier with them. Thanks etrailer for all you offer.

- DM86VR
2013 Ford F-150

After watching many informative etrailer installation videos on flat towing a 2013 Ford F-150, I logged on to their website to begin placing my order on line. Had a few questions so I called and spoke with Ashley. She answered my questions and recommended items needed to complete the installation. Ended up placing my order over the phone with her and am very glad I did!! Ordered on a Monday and all items arrived in Minnesota on Wednesday, two days later!!

- DM86VR

I love the stay n play. I broke an actuator cable due to misalignment but that’s on me. I got a replacement cable from trailer and easily repaired it at a campground while on the road. It’s saved me a couple of times making emergency quick stops. All good. Thanks

- DM86VR

It’s a lot of work to get it installed but once done it works good on all this stuff all tho they give you instructions you have to look up some of it to see how it hooks up their videos aren’t very clear on how to do it..

- DM86VR

Love etrailer. Only reason not going 5 star is the 7 way to 6 way cable. 6 way has male pins. Useless and I bought the male receiver from etrailer too.

- DM86VR

The system is definitely cost effective and works well. More importantly, I had some issues because I tow a very small car. The customer service from Demco was very good. They walked the installers through how to deal with the challenges.

- DM86VR

After having another system that was locking up my brakes it was awesome that Christina was totally confident this was what we needed and it’s working beautifully, thanks to etrailer for the great support and product

- DM86VR

Worked so well on my previous tow vehicle I bought it again for the new one.

- DM86VR
by: 04/08/2021

Works great. Self installed on 2018 Ford F150 without much difficulty. I recommend watching etrailer install video. Mine has wireless duo monitor. Extra care needs to be used when splicing into tiny brake light switch wire. If bad connection is made truck will not shift out of park.

- DM86VR

Love it, works great, nothing to take in and out simply flip a switch and it works

- DM86VR

Demco is a Great Product its what we recommend to our customers. etrailer Normally gets me product within days.

- DM86VR

This is a great braking system for my car and etrailer did a wonderful job getting it to me as quickly as possible. Happy to recommend Demco and etrailer!

- DM86VR
Ford Explorer

The system is great. I'm installing it on a ford explorer. I had a question about the instructions, and I called customer service. To my surprise, the phone ring once, and I got to talk to the service personnel in less than 2 minutes. I received an answer and a great explanation. Thank you for your excellent service.

- DM86VR

Excellent customer service and response. Quick resolution of issues. As a new and first time motorhome owner, this company is a tremendous resource.

- DM86VR

Quick service

- DM86VR

Got the ordered items very quickly. Now to get them installed next week.

- DM86VR
2014 Chevrolet Sonic

Unit arrived earlier than expected. Very happy with the service.

- DM86VR

Representative was able to update my order and get me this ahead of my maiden trip with my toad.

- DM86VR

- DM86VR
2002 Jeep Wrangler

- DM86VR

- DM86VR

Show More Reviews

Ask the Experts about this Demco Tow Bar Braking Systems

  • Does the Demco Stay-IN-Play DUO Require Installing Anything In My Coach
    This is partially correct. The Demco Stay-IN-Play Duo Supplemental Braking System w/ Wireless Coachlink Monitor - Proportional # DM86VR installs in your tow vehicle and not in the coach, however it's not compatible with air brakes. Instead of the Stay-IN-Play, you'll want to use the Demco SBS Air Force One system # DM26VR. It will work very similarly and provide proportional braking for your tow vehicle, in a permanently installed braking system. The wireless CoachLink sends a signal...
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  • Keeping Your Vehicles Battery Charged While Using The Demco Stay In Play Duo Braking System
    The # DM86VR does not come with a battery charger. You can install the # BB54FR to keep your vehicle's battery charged.
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  • Flat Towing Equipment Recommendations for 2017 Jeep Wrangler Unlimited JK
    To flat tow your 2017 Jeep Wrangler Unlimited JK, you'll need base plates, safety cables, a tow bar, a taillight wiring harness, a supplemental braking system and perhaps a high/low adapter. The exact base plate kit you need will vary on the sub model and the front bumper your JK is equipped with. Assuming you have the standard factory bumper and your JK isn't a Hard Rock or 75th anniversary model, you'd use the # BX1126 Blue Ox base plate. If you have a bumper other than the standard...
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  • Can 2021 Ford Escape Hybrid be Flat Towed & Parts Needed
    Yes, the 2021 Ford Escape hybrid can be flat towed, and there was no differentiation in the Ford towing guide between FWD or AWD capabilities. There are a number of parts needed in order to flat tow your 2021 Ford Escape hybrid which I'll list for you. Keep in mind this only applies to the standard hybrid and NOT the plug-in hybrid. There are no base plate fits for the plug-in hybrid. - Base Plate Kit: Roadmaster Direct-Connect Base Plate Kit # RM39FR - Tow Bar: etrailer SD Non-Binding...
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  • Reinstallation Kit For Demco Stay-IN-Play Duo
    You're going to want the Demco SBS Reinstall Kit # SM6270 for the Demco Stay-IN-Play Duo # DM86VR, You can remove the main components to your 2020 Lincoln Nautilus, from your 2012 Jeep Wrangler, and purchase the reinstall kit and be ready to roll. The components you're going to need to transfer from your Jeep is the operating unit, GeForce controller, and the actuating cylinder that is attached to your brake pedal.
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  • Does the Demco Stan-IN-Play Supplemental Braking System Provide Power to the Towed Vehicle?
    The Demco # DM86VR Stay-IN-Play Supplemental braking system gets its power from the towed vehicles battery to run all of its systems. However, I think you might be asking about the tow bar wiring harness such as the Roadmaster # RM-152-98146-7 that provides the lighting systems (not brakes) for your towed vehicle. A tow bar wiring kit is sold separately from the supplemental braking system. If you need recommendations for other flat-tow parts just let me know.
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  • How Long Does Stay-IN-Play DUO Braking System Take to Install
    From everything our customers have told us, it will take in the neighborhood of 4 to 5 hours to install the Demco supplemental braking system you asked about, which is the Demco Stay-IN-Play DUO Supplemental Braking System w/ Wireless Coachlink Monitor # DM86VR. I've also heard people say they did it in three or took about six hours; this is very dependent on the person though, so your mileage may vary, so to speak. As far as the RVI Shadow, it's not something we carry so I can't give...
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  • Does Demco Stay N Play Require Using Brake Lite Relay Installed in 1993 Jeep YJ
    When you use the Demco Stay In Play part # DM86VR in your 1993 Jeep YJ Wrangler you will need to use the brake lite relay part # RM-88400 to prevent the Demco from overriding the turn signals when it steps on the brake.
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  • Does Demcos Stay-IN-Play DUO Include Harness for Taillight Wiring
    When using the Demco # DM86VR Stay-In-Play DUO braking system, you would indeed still need a taillight wiring harness like the Roadmaster # RM-15247 diode kit so the taillights on the towed vehicle work in tandem with those on the motorhome while the vehicle is being flat towed. In order to flat tow your vehicle, you'll also need a tow bar, base plates, safety cables, the taillight wiring harness I touched on above and possibly a high/low adapter plus a few other odds and ends. If you'd...
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  • Parts Needed to Flat Tow 2016 Mini Cooper w/ Manual Transmission & All-Wheel Drive
    So long as you have the manual transmission on your 2016 Mini Cooper, flat towing is possible with either front-wheel or all-wheel drive. There are a number of parts you will need in order to flat tow your Mini, which I'll list out for you: - Base Plate Kit: Blue Ox Base Plate Kit # BX1312 - Tow Bar: Curt Rambler Steel Tow Bar for Curt and Blue Ox Base Plates # C26FR - Wiring Kit: Roadmaster Universal Hy-Power Diode Wiring Kit # RM-154 - Supplemental Braking System: Demco SBS...
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  • How Does Demco SBS Stay N Play Detect How Hard to Apply Trailer Brakes
    We do carry the Demco DUO Stay N Play part # DM86VR which we has an internal accelerometer that senses inertia changes and combined with a brake signal will work to apply the towed vehicle brakes with a similar intensity. It is mercury switch inside unit that accurately detects the braking. We do not carry the Shadow system so we don't have much info we can give on it.
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  • Which Supplemental Braking System for 2020 Ford Escape Towed by Coachmen Pursuit 32WC
    I don't believe that a Coachmen Pursuit 32WC has air brakes, so the Air Force One would be out of the question. The main difference you should likely be considering is whether you want a permanently installed braking system or one that is portable and requires setup each time you're going to be traveling. They both have their benefits and draw-backs, but considering that it appears you're towing a 2020 Ford Escape that you'll likely have for a while, your best bet is probably going to be...
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  • Flat Towing With a 2021 Jayco Precept Motorhome
    Since you'll be flat towing a vehicle instead of just towing a trailer with your 2021 Jayco Precept Motorhome you will need a supplemental braking system and not a standard trailer brake controller. Trailer brake controllers like the Tekonsha P3 # 90195 are designed to activate the brakes on a trailer directly while supplemental braking systems will push down on the brake pedal of your vehicle to activate the brakes. I recommend the Demco Stay-IN-Play DUO Supplemental Braking System w/...
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  • Troubleshooting Pulsing Brakes With The Demco Stay-In-Play Braking System While Turn Signal Is On
    Demco stated that the pulsing that you've been experiencing with the Demco Stay-IN-Play DUO Supplemental Braking System w/ Wireless Coachlink Monitor - Proportional # DM86VR when your turn signal is activated is normal and usually caused by the sensitivity being cranked up too high and near the max setting. You can adjust the sensitivity of the inertia-sensing mercury switch with a knob on the front of the G-Force controller. Adjusting the sensitivity lets you decide how intense the...
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  • Best Tow Bar For Blue Ox Base Plates on 2021 Ford Escape Hybrid
    The best option for a tow bar that is compatible with the Blue Ox Base Plates # BO24FR that fit your 2021 Ford Escape hybrid is the etrailer SD Non-Binding Tow Bar for Blue Ox Base Plates # e47ZR. There are a number of reasons why I highly recommend the # e47ZR tow bar, starting with its long arms, which extend nearly 52 inches from the hitch when connected to your base plates. What this does is allow your Escape to track and maneuver better than shorter tow bars, particularly when turning....
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  • Difference Between Curt & Blue Ox Base Plate For 2021 Jeep Wrangler Unlimited
    The only difference between the base plates for your 2021 Jeep Wrangler Unlimited is that one, the Blue Ox, has mounting tabs for a connector plug, while the Curt does not: - Connector Plug Mounting Tabs: Blue Ox Base Plate Kit - Removable Arms # BX1139 - No Mounting Tabs: Curt Custom Base Plate Kit - Removable Arms # C68FR I have added a photo below showing the mounting tabs of the Blue Ox base plate so you can see exactly what I am referring to. Apart from that though, the two...
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  • Are You Able To Mix Parts Between The Roadmaster BrakeMaster And Demco Stay-In-Play Dup Systems
    The Demco Stay-IN-Play DUO Supplemental Braking System w/ Wireless Coachlink Monitor - Proportional Item # DM86VR and Roadmaster BrakeMaster Braking System with BrakeAway for RVs with Hydraulic Brakes - Proportional # RM-9060 are two different systems and you would not be able to mix the parts between units. Doing so could cause the braking system to malfunction and void any warranty on the breaking systems and place all liability in the event of an accident on you. I recommend using...
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  • Demco Stay-IN-Play DUO Pulsing On/Off When Turn Signal Is Activated
    This is actually a fairly common issue with the Demco Stay-IN-Play # DM86VR, and there are solutions. Since the turn signals and brake lights normally use the same wires, they use variable voltage to activate each circuit. The system is seeing a signal less than 12v and is trying to activate. What you'll need to do is reset the GFC (G-force controller) slightly to the "more" position. Then, go through the GFC set-up again which is step 12 in the instruction manual. This time, raise the...
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  • How Does Remote Brake Monitor Work on Stay-IN-Play DUO
    The Stay-IN-Play DUO, # DM86VR, ties into the brake light switch on your towed car so that you'll be notified only when your towed car's brake pedal is being engaged. There is an inertia-sensing mercury switch inside the DUO's controller is what makes this system proportional. This switch reads and interprets changes in forward momentum that occur when your towing setup decelerates. As your RV and car slow down, this switch sends a signal to activate your towed vehicle's brake pedal...
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  • 2018 Honda Civic Sport Flat Towing Components
    I must say you have made some fine choices for flat towing your 2017 Honda Civic Sport. In fact, everything as you have it will work perfectly for your vehicle. The Roadmaster base plate you have chosen, part # RM-521573-4, is perfectly compatible with your Civic and the Falcon All Terrain, part # RM-522. The two of these together along with the safety cables, part # RM-643, are definitely a great combination to get your Civic pulled. I've linked to video reviews of the Falcon and cables. As...
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  • Will Demco Stay-IN-Play DUO Supplemental Braking System Work On Motorhome with Air Brakes
    The Demco Stay-IN-Play DUO Supplemental Braking System part # DM86VR is designed for motorhomes with hydraulic brakes and the Demco SBS Air Force One Supplemental Braking System part # DM26VR is designed for motorhomes with air brakes. The two cannot be substituted. The Air Force One would not even be able to be installed on a motorhome with hydraulic brakes and if you were to install the Stay-IN-Play on a motorhome with air brakes, the system would not have enough power to function properly.
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  • Why Isn't Roadmaster InvisiBrake Supplemental Braking System Good For Mountainous Areas
    That's a good question, and the reason the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 is not a very good option if you will be flat towing in mountainous or hilly areas is because it applies the same amount of braking force no matter what. A set amount of braking power is not optimal for mountainous areas with steep inclines and declines because when ascending there will be too much braking power, putting more pressure on your RV and making it more difficult to climb,...
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  • Blue Ox Base Plates & Parts to Flat Tow 2021 Ford F-250 Super Duty
    We have you covered with all the parts you'll need to flat tow your 2021 Ford F-250 Super Duty, including the Blue Ox base plates. These are a really nice choice because there isn't any part of the base plate showing except for the tabs, which are removable when you aren't flat towing your truck, which ensures it keeps it's aesthetic. The list of all the parts you need to flat tow your 2021 F-250, including the base plates, is the following: - Base Plate Kit: Blue Ox Base Plate Kit...
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  • Base Plate Adapter, Tow Bar, & Braking System to Flat Tow 2016 Jeep Wrangler With XRC Bumper
    Thanks for the photo! Glad you're enjoying the site and we can absolutely get your 2016 Jeep Wrangler with an XRC front bumper ready to flat tow. First you'll need the base plate adapters to connect to your D-rings, and the correct one is going to depend on the size of the pin hole on your bumper, which is likely 7/8" but could be 1" so you'll want to verify that size and then you can use either of the following: - 7/8" Pin: Blue Ox Aftermarket Off-Road Bumper Adapter # BX88357 -...
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  • Parts Needed To Flat-Tow a 2021 Ford Ranger
    In order to flat-tow a 2021 Ford Ranger you'll need base plates, safety cables, tow bar, wiring harness, and supplemental braking system. I have attached my recommendations for these parts below. Roadmaster Direct-Connect Base Plate Kit part # RM-524459-5 Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar part # RM-676 (Safety Cables Included) Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 Roadmaster Brake-Lite Relay Kit for Towed Vehicles part # RM-88400 Demco...
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  • Finding a Supplemental Braking System Option for a Jeep Wrangler
    Without knowing the exact year, make, model of your vehicle I can not make a 100% recommendation. That being said as long as your Jeep Wrangler is 1987 or newer the following options would work. You would just want to plug your Jeep into our fit guide to verify that they work for your vehicle. Or if you want to provide me with your vehicle year I would be happy to help you get the right system. You have two main options to choose from. Either a portable system that will allow you to move...
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  • Recommended Parts to Flat Tow 2021 Jeep Gladiator
    We can get you set up with all the parts you need in order to flat tow your 2021 Jeep Gladiator, and I'll make a list for you and then go over the recommendations. - Base Plate Kit: Demco Tabless Base Plate Kit # DM9519336 - Tow Bar: Demco Commander II Non-Binding Tow Bar # DM9511012 - Wiring Kit: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 - Supplemental Braking System: Demco SBS Stay-IN-Play DUO Supplemental Braking System # DM86VR OR - For a motorhome...
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  • Best Parts to Flat Tow a 2019 Chevy Spark
    Happy to give you the best parts for you to flat tow your 2019 Chevy Spark, and I'll go ahead and make a list for you of the parts, as well as the reasons for recommending them. - Base Plate Kit: Roadmaster Direct-Connect Base Plate Kit # RM-523202-5 - Tow Bar: etrailer SD Non-Binding Tow Bar for Roadmaster Direct-Connect Base Plates # e74ZR - Base Pins with Chains and Clips # RM-910029 - Wiring Kit: Roadmaster Tail Light Wiring Kit with Bulbs # RM-155 - Roadmaster Automatic Battery...
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  • How to Use Roadmaster BlackHawk 2 Tow Bar With Blue Ox Base Plates on 2020 Lincoln Navigator
    So it sounds like you are just looking for a way to use your Roadmaster BlackHawk 2 All Terrain, Non-Binding Tow Bar # RM-422 with the Blue Ox base plates that fit your 2020 Lincoln Navigator, which are the Blue Ox Base Plate Kit - Removable Arms # BO84FR. This is easy to do with a simple adapter, and the correct one for your tow bar is the Roadmaster Tow Bar to Blue Ox Brackets Adapter # RM-031. I have added a photo showing what it will look like with the adapter on so you can see...
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  • Base Plate Fit for 2021 GMC Sierra 2500
    The Chevy/GMC trucks underwent a generational design change for the 2020 model year, so the base plates that fit your 2015 GMC Sierra 2500 will not fit your 2021 GMC Sierra 2500. As of this writing, Blue Ox does not have an option for base plates that fit your truck but there is an option from Roadmaster with the Roadmaster Direct-Connect Base Plate Kit # RM86FR. I have added a photo a customer sent in showing these base plates on their GMC Sierra 2500 so you can see how it will look...
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Info for this part was:

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