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Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector

Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector

Item # DM9523010-54
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Tow Bar Wiring

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Demco Tow Bar Wiring - DM9523010-54
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This complete kit includes everything you need to connect your RV's tail, brake, and turn signal lights to your towed car. Diodes prevent feedback and wire your car to operate as a combined system. Includes a 7-way to 6-way coiled adapter cord. Lowest Prices for the best tow bar wiring from Demco. Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector part number DM9523010-54 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (12)
  • Q & A (21)
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  • Why etrailer?

Demco Tow Bar Wiring - DM9523010-54

  • Diode Kit
  • Splices into Vehicle Wiring
  • Universal
  • Tail Light Mount
  • Demco

This complete kit includes everything you need to connect your RV's tail, brake, and turn signal lights to your towed car. Diodes prevent feedback and wire your car to operate as a combined system. Includes a 7-way to 6-way coiled adapter cord.


Features:

  • Complete wiring kit lets you connect your RV's tail, brake, and turn signal lights to your towed vehicle's lighting system
    • Wires towed car as a combined lighting system so that brake and turn signals travel along the same wire
  • Diodes prevent electrical feedback and the damage it can cause to your car's electrical components
  • 7-Wire to 6-wire adapter cord allows you to run power from your RV to your towed vehicle
    • Coiled design prevents wire from dragging on the ground
  • 6-Way socket wires to included harness and mounts on towed car with bracket (sold separately)
  • Sturdy, durable construction
    • Heat-sealed casing protects diodes from the elements
    • Vinyl-coated electrical cord resists water, oil, and chemicals
    • Silicone-injected plugs prevent corrosion
  • Kit includes:
    • 4 Diodes
    • 4-Wire harness
    • 7-Way to 6-way adapter cord
    • 6-Way socket
    • Wire connectors
    • Cable ties
    • 1 Ring terminal
  • Made in the USA


Specs:

  • Wiring harness length: 26'
    • Wire gauge: 16
  • Adapter cord extended length: 7'
  • 1-Year warranty


Note: For applications that have separate lighting, this kit will cause your brake lights to function as both brake and turn signal lights. A wiring converter (118158 - sold separately) and 2 additional diodes will be needed if you want to retain separate turn and brake signals.


Separate vs. Combined Lighting Systems

Some automobiles operate on a 3-wire system, wherein the brake signal and the turn signals travel along different wires to illuminate different lights. (Typically, these vehicles have amber turn signals.) This is referred to as a "separate lighting system." When you hook up for flat towing using this kit, your towed car's lighting system will operate in a combined fashion regardless of whether it typically has combined or separate lighting. This means that the brake and turn signals sent by your RV to your towed car will be carried on a single wire. As a result, your car's brake lights will do the flashing for the turn signals. Your vehicle will still function as designed when not hooked up to your RV.


Do You Need a Brake Light Relay?

Because this kit wires your vehicle as a combined system, a brake light relay (sold separately) may be required if you use a supplemental braking system with your towing setup. A supplemental braking system depresses the brake pedal in your towed car every time you apply the brakes in your RV. So, if your towed car's brake lights illuminate when the brake pedal is pressed and the engine is off - as is the case when towing - then you need to install a relay to ensure that the lights on your towed car always act in accordance with the signals sent by your RV via the wiring harness. Without a relay, the brake signal from your towed car will override the turn signal sent by your RV when you slow down to make turns, creating a potential hazard.



9523010 Demco Tail Light Wiring Kit

9523054 Demco Trailer Connector Adapter - 7-Way to 6-Way - 7' Cord

Installation Details DM9523010-54 Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector - DM9523010-54

Average Customer Rating:  4.8 out of 5 stars   (12 Customer Reviews)

This complete kit includes everything you need to connect your RV's tail, brake, and turn signal lights to your towed car. Diodes prevent feedback and wire your car to operate as a combined system. Includes a 7-way to 6-way coiled adapter cord.

- DM9523010-54
by:

EASY install and quick service


Comments
Works great we use it at least monthly to pull our Jeep gladiator behind the RV no issues at all
James - 07/17/2021


- DM9523010-54
by:

Exactly what I needed



- DM9523010-54
by:

Very fast service!



- DM9523010-54
by:

Work out excellent



- DM9523010-54
by:

excellent service



- DM9523010-54
by:
2021 Jeep Cherokee



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- DM9523010-54
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- DM9523010-54
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2018 Jeep JL Wrangler



- DM9523010-54
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2019 Jeep Wrangler Unlimited

great



- DM9523010-54
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12
12

Ask the Experts about this Demco Tow Bar Wiring

  • How To Install Tow Bar Wiring On Vehicle With Separate Brake Signal And Turn Signals
    When installing tow bar wiring on a vehicle with separate brake and turn signals that will be flat towed you would want to use a diode kit like the Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector # DM9523010-54. When installed it will make your brake lights flash as the turn signals instead of your actual amber turn signals when being flat towed. If you wanted to keep the separate wiring for flat towing you would need the Vehicle to Vehicle Tail...
    view full answer...
  • Does 2020 Buick Envision Need Brake Light Relay and Which is Easier Blue Ox or Roadmaster Setup
    Does our Allegro have trailer wiring already present at the rear of the vehicle? Like with a 7-way connector? If so the circuits are already combined regardless of what you see on the vehicle taillights. If you plan to use a diode kit or bulb and socket tow bar lighting solution you will need a brake light relay like # RM-88400 when using the brake system you mentioned so that the brake lights won't override the blinkers. It's a toss up on which is easier to use between the Roadmaster...
    view full answer...
  • Flat Tow 2021 Ford F-250 Super Duty
    That is good that you already have the base plates and tow-bar for your 2021 Ford F-250 Super Duty, and the needed supplemental braking. That just leaves a few items such as the the wiring kit, I suggest the Demco 4-Diode Universal Towed Vehicle Wiring Kit, # DM9523010-54. For your supplemental braking, if you have the Demco SBS Air Force One Supplemental Braking System for Motor Homes with Air Brakes, # SM99243, then you all you need is the Second Vehicle Kit, # SM99209. You may...
    view full answer...
  • Is the Demco 4-Diode Universal Towed Vehicle Wiring Kit Offered Without 7 to 6-Way Cord
    Yes, the Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector part # DM9523010-54 is available without the umbilical cord using the Demco 4-Diode Universal Towed Vehicle Wiring Kit part # DM9523010. If you need the 6-pole as well you can get this with part # PK11609.
    view full answer...
  • 2018 Chevrolet Equinox Flat Tow Wiring Needs
    The Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector # DM9523010-54 is going to allow you to run your vehicles existing 4 pole harness to the front to connect to your RV's tail, brake, and turn signal lights to your towed vehicle's lighting system. If you already have the wiring you need the Mighty Cord Trailer Connector Adapter - 4-Way Flat to 6-Way Round # A10-6034VP and the Hopkins Heavy-Duty, Coiled Trailer Connector Adapter - 7-Way to 6-Pole...
    view full answer...
  • Does Flat Towing 2016 Ram 1500 Require Brake Light Relay With Demco 7-Wire to 6-Wire Connector
    Your 2016 Ram 1500 will not require a brake light relay, the RV turn signals will not override the brake light when you are using the Demco 4-Diode Universal Towed Vehicle Wiring Kit with 7-Wire to 6-Wire Coiled Connector # DM9523010-54.
    view full answer...
  • Best Way To Flat Tow A 2021 Jeep Wrangler Unlimited
    I suggest getting the etrailer Invisible Base Plate Kit # e98948 for your 2021 Jeep Wrangler Unlimited. This comes with everything you need to get it installed. To get your Jeep ready for the flat tow, I suggest getting the Blue Ox Altha 2 Tow Bar # BX7380, a portable braking system # BRK2019 and wiring # DM9523010-54 to complete your setup.
    view full answer...
  • 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...
    view full answer...
    Image 1 for
  • Comparing Base Plate Kits for a 2019 Ford Expedition
    The best base plate kit for a 2019 Ford Expedition is the Demco Tabless Base Plate Kit part # DM9519318 because it does not have any sort of cross tube that attaches the two side together unlike the Roadmaster Direct-Connect Base Plate Kit part # RM-524457-5 or Blue Ox Base Plate Kit part # BX2678. The lack of a cross tube is going to limit the amount of modifications that are needed which then reduces install time as well so this is really the best route to take. Furthermore, the Demco...
    view full answer...
  • Tow Bar and Flat Tow Parts Needed for Heavy 2020 Ram 3500
    We can definitely get you a flat tow set up for your 2020 Ram 3500. These trucks are heavy, but the GVWR you are referring to is the gross weight, which is the max weight it can be when loaded with passengers and cargo. According to my research, a 2020 Ram 3500 has a curb weight (unloaded) of up to just over 7,500 lbs max. So even if you have some cargo in the truck, it is difficult to imagine you will be exceeding the 10,500 lb tow bar option you can use with a 2 inch hitch on your...
    view full answer...
    Image 1 for
  • Does Direct Connect Base Plate Kit for 2021 Chevy Equinox Require Crossbar
    If you went with the Direct Connect Roadmaster base plate kit for your 2021 Chevy Equinox with part # RM-523193-5 you would not need the crossbar that you are missing so this would be the easiest solution. The temporary install braking kits like the Blue Ox Patriot part # BRK2019 will install and work great without issue. For lighting the diode kit part # DM9523010-54 is a great choice that comes with everything needed to splice into your taillights.
    view full answer...
  • Recommended Flat Tow Setup for a 2014 Chevy Captiva Sport
    I can definitely help you out with parts to flat tow your 2014 Chevy Captiva Sport. I really like the Demco setup you were looking at because Demco offers a few kits that include just about everything that you need, plus they have very nice tow bars that will last you a long time which you can use on future vehicles you choose to flat tow. For a base plate kit use part # DM9518218 and the the Demco tow bar I recommend is the Dominator # DM9511008 because it has a 7,500 lb weight capacity...
    view full answer...
  • Can a 2016 Ford Explorer 4WD With V6 Be Flat-Towed
    Yes, a 2016 Ford Explorer (4WD) can be flat-towed with all four wheels down so long as it has the 3.5L V6 or 3.5L EcoBoost V6 Engine. That said, there are no modification needed for this unless a specific flat-tow part you are looking at requires this. I have attached some parts for you below as well that you will need. Demco Tabless Base Plate Kit part # DM9519329 (Clean Look) Demco Dominator Non-Binding Tow Bar part # DM9511008 (Easiest To Use) Demco 4-Diode Universal Towed Vehicle...
    view full answer...
  • Can 2010 Jeep Grand Cherokee 4WD Quadra–Trac II be Flat Towed and Parts Needed
    I took a look at the online owner's manual for your 2010 Jeep Grand Cherokee, and under the "Recreational Towing" section your Quadra–Trac II model CAN be flat towed because it has a neutral transfer case, which is exactly what you described. If you go to page 340 (of the online manual, yours may be different) it explains exactly how to transfer into neutral, which you will do before towing. Since you mentioned Demco, here are all the parts you will need from Demco to flat tow your...
    view full answer...
  • Best Parts to Flat Tow 2021 Kia Soul With Manual Transmission
    There are a number of parts you will need in order to flat tow your 2021 Kia Soul with a manual transmission, and I'll be happy to recommend the best parts that are the easiest to use for you. The best parts for you are the following: - Base Plate Kit: Blue Ox Base Plate Kit # BX2727 - Tow Bar: Blue Ox Alpha 2 Tow Bar # BX7380 - Wiring Kit: Demco 4-Diode Universal Towed Vehicle Wiring Kit with 7-Wire to 6-Wire Coiled Connector # DM9523010-54 - Supplemental Braking System: Demco SBS...
    view full answer...
  • Difference Between Blue Ox and Demco Wiring Kit for Flat Towing 2019 Jeep Wrangler
    There is really only one difference between the Demco 4-Diode Universal Towed Vehicle Wiring Kit with 7-Wire to 6-Wire Coiled Connector # DM9523010-54 and the Blue Ox Tow Bar Wiring Kit # BX8848, which is that the Demco comes with the 7-Wire to 6-Wire cord as well as a vehicle-side 6-way while the Blue Ox kit requires those be purchased separately. So if you were to go with the Blue Ox Tow Bar Wiring Kit # BX8848 you would also need the Blue Ox 7-Wire to 6-Wire, Coiled Electrical Cord...
    view full answer...
  • Procedure and Equipment Needed to Flat Tow 2015 Ford Edge SEL Behind Motorhome
    According to what I've read in the owner's manual, your Edge can indeed be flat towed if the specific procedures listed in the manual are followed precisely. To flat tow your Edge, hook up to the motorhome then press and hold the brake to the floor. Start the vehicle and shift into Neutral with the brake pedal still pressed then turn off the vehicle. On a keyless start equipped vehicle, push the keyless start button one to shut off. If the vehicle has an ignition key, turn the vehicle...
    view full answer...
  • Tow Bar Lighting Kit That Fits 2018 Ford Edge
    The Hopkins Tow Bar Lighting Kit part # HM56011 is a confirmed fit for the Sport and Titanium models of your 2018 Ford Edge but not the other models. If you have one of the other models you'd need a diode kit like the part # DM9523010-54. For your tow vehicle that does not have air brakes the DUO part # SM99251 that you mentioned would be a great option. Our installers prefer this system to all of the other permanent install options because of how well it works and how much easier it...
    view full answer...
  • All Parts Needed to Flat Tow 2011 Jeep Wrangler With Standard Bumper
    We can get you set up with all the parts needed to flat tow your 2011 Jeep Wrangler with a standard factory bumper. There are a number of parts you'll need so I'll go ahead and list them out for you to make it easy to order: - Base Plate Kit: Demco Tabless Base Plate Kit # DM9519292 - Tow Bar: etrailer SD Non-Binding Tow Bar # e34ZR - Wiring Kit: Demco 4-Diode Universal Towed Vehicle Wiring Kit # DM9523010-54 - Roadmaster Automatic Battery Disconnect # RM-766 - Supplemental...
    view full answer...
  • Using Demco Aluminator Tow Bar With Roadmaster EZ Base Plates on 2008 Toyota Yaris
    Your Demco Aluminator tow bar is compatible with the Roadmaster EZ Base Plate Kit # 521181-1 that fits your 2008 Toyota Yaris, you will simply need an adapter, the Roadmaster Tow Bar Adapter # RM-032. As for the other parts needed to flat tow your 2008 Toyota Yaris with a Demco Aluminator tow bar, here is a list of everything you will need, and I'll include the base plates and adapter. - Base Plate Kit: Roadmaster EZ Base Plate Kit # 521181-1 - Roadmaster Tow Bar Adapter # RM-032 -...
    view full answer...
  • Which Tow Bar is Compatible with Roadmaster EZ-5 Base Plates for 2020 Jeep Wrangler Unlimited
    The Roadmaster part you've referenced with part number 521450-5 is no longer available, but it was an EZ-5 base plate so I recommend using the Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar w/ LED Lights - RV Mount - 8K # RM-676, which comes with safety cables integrated into the setup. This would be compatible with the discontinued 521450-5 base plate you've mentioned or the current model, which is the Roadmaster Direct-Connect Base Plate Kit - Removable Arms # RM-521453-5. If...
    view full answer...

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