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Demco 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Adapter Cord

Demco 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Adapter Cord

Item # DM9523010-54
Our Price: $218.31
Tow Bar Wiring

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This complete kit includes everything you need to correctly display your RV's brake and turn signals on your vehicle tail lights. Includes coiled 7-way to 6-way cable and 6-way car-side socket. Great Prices for the best tow bar wiring from Demco. Demco 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Adapter Cord part number DM9523010-54 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (51)
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Demco Tow Bar Wiring - DM9523010-54

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

This complete kit includes everything you need to correctly display your RV's brake and turn signals on your vehicle tail lights. Includes coiled 7-way to 6-way cable and 6-way car-side socket.


Features:

  • Diodes display your RV's brake and turn signasl 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
    • Prevents feedback that can damage your vehicle's electrical components
    • Resists corrosion with heat-sealed casing
  • 7-Wire to 6-wire adapter cable lets you easily run power from your motorhome to your towed vehicle
    • Coiled to prevent dragging and tangling
    • Resistant to water, oil, and chemicals, with vinyl coating and silicone-injected plugs to prevent corrosion
  • 6-Way socket hardwires to towed car and mounts on the front bumper
  • 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


Separate vs. Combined Lighting Systems

Combined vs Seperate Lighting System

This kit will display on your towed car as a combined lighting system - also known as a 2-wire system. A combined lighting system uses the same light bulb to signal both braking and turning (in other words, the car signals a turn by flashing the brake light, while a separate/3-wire system light up independently of each other. Add a wiring converter (118158 - sold separately) and 2 additional diodes to get a separate lighting system.


Do I Need a Brake Light Relay?

Because your vehicle has a combined lighting system - wherein the brake signals and the turn signals are carried on a single wire - a brake light relay (RM-88400 - 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 Satisfaction Score:


Customer Reviews

Demco 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Adapter Cord - DM9523010-54

Average Customer Rating:  4.8 out of 5 stars   (51 Customer Reviews)

This complete kit includes everything you need to correctly display your RV's brake and turn signals on your vehicle tail lights. Includes coiled 7-way to 6-way cable and 6-way car-side socket.

by:

etrailer was extremely helpful in getting me parts to flat tow our 2023 Jeep Wagoneer. More specifically, Noah took the time to research the required parts, offer technical guidance, and follow up to ensure I was taken care of. Top notch service which was much appreciated.



by:
2023 Jeep Wrangler Unlimited

Needed new wiring and diodes for my 2023 Jeep Rubicon. ETrailer makes it so easy to set up all the wiring for flat towing.



by:
Jeep Wrangler

This kit was fairly easy to install on a 2021 Jeep Wrangler. If you use this kit to set up a Roadmaster Nighthawk tow bar you do not need the 7-wire to 6-wire coil connector as the tow bar comes with it. Get a 4 diode wire kit without the coil connector and save money.



by:

Works great, to charge battery of toad you need to change the 12v power from center to match the towed vehicle or wire up towed car to center post 12v



by:

Took time to do the wiring, but once done it works great!



by:
2017 Cadillac Escalade

Great products and quick delivery.



by:

EASY install and quick service

James

7/17/2021

Works great we use it at least monthly to pull our Jeep gladiator behind the RV no issues at all



by:

Harry

2/19/2023

Great



by:
Jeep Cherokee

The salesman was very helpful picking the correct setup for my Cherokee, easy to install, looks and works great



by:

Works as advertised , however I feel the braking is more abrupt than gradual ..



by:

Works great 1 year and still working pe rfectly



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Works great, no issues



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by:

Good quality.



by:

Exactly what I needed



by:

Work out excellent



by:

The parts came quickly and they were exactly as described



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2017 Ford F-150



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2014 Honda CR-V


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See what our Experts say about this Demco Tow Bar Wiring

  • Troubleshooting A Non-Working Light Function With Diode Wiring
    Since the diodes in the Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector # DM9523010-54 use spade terminal connectors the easiest way to test the diode would be to swap the connections on the diode in question and test your light functions to see if the terminal on the diode is the issue. If it randomly stopped working then the cause is typically just a loose connection or a bad ground so I would check the connections and make sure there's no damage...
    view full answer...
  • Demco Universal Towed Vehicle Wiring Kit for 2021 Jeep Wrangler
    I would be happy to help make a wiring recommendation for your 2021 Jeep Wrangler. I recommend the Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector item # DM9523010-54. This complete wiring kit lets you connect your RV's tail, brake, and turn signal lights to your towed vehicle's lighting system. The diodes prevent electrical feedback and the damage it can cause to your car's electrical components.
    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.
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  • 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...
  • Replacement Demco Coiled 7-Way To 6-Way Diode Wiring Kit Cable
    If you're just wanting the 7-wire to 6-wire cable from the Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector # DM9523010-54 then you'll want part # DM9523054. This will also include another 6-way socket, which you can hang onto as a backup if you ever have an issue with your current one.
    view full answer...
  • Can You Order Just 7-way to 6-way Cord From Demco Diode Kit DM9523010-54?
    Yes we sell just the 7-way to 6-way cord included in the Demco # DM9523010-54 you were looking at without getting the diodes. You'll need # DM9523054, though it will come with a new 6-way plug that you can keep as a spare. There's no way to order it without that plug as well.
    view full answer...
  • Recommended Tow Dolly For A 2010 Ford Ranger
    The online manual for a 2010 Ford Ranger doesn't list anything about dolly towing the vehicle but does state that manual transmissions can be placed in 2WD and flat towed, so you're more than likely fine to dolly tow your Ranger, but I recommend double-checking with your local Ford dealership to ensure there isn't anything else that would prevent you from doing so. If you haven't purchased your tow dolly yet then I recommend the Demco Kar Kaddy X Tow Dolly w/ Disc Brakes # DM9713093....
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  • Are There Replacement Baseplate Adapters Available For A Roadmaster Eagle 8000 Tow Bar
    I spoke with Roadmaster and unfortunately the Eagle 8000 tow bar has been discontinued for 15+ years so there are no longer any compatible replacements available for it. If you didn't want to have to purchase newer tow bar then you would need to use a Demco baseplate like the Demco Tabless Base Plate Kit # DM9519332. This baseplate will require you to trim/remove the lower active air shutters in order for it to fit, just like you would with any other baseplate.
    view full answer...
  • How To Determine If I Need To Install A Brake Light Relay On My Towed Vehicle
    It depends on whether or not the towed vehicle's brake lights illuminate when the brake pedal is pushed when the vehicle is being towed. If yes, then you'll need to install a brake light relay with # RM-88400; that way your vehicle will act in accordance with the signals sent by your RV.
    view full answer...
  • Tow Bar Lighting Kit Solution for 2018 Ford Edge that is No-Splice
    We do have a plug and play tow bar lighting kit solution for your 2018 Ford Edge with the Hopkins kit part # HM56011 which plugs in line with the taillight wiring harnesses of the vehicle. I attached an install video for this for you to check out as well. I really like these since they install without having to splice into the vehicle wiring.
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  • Flat Towing Wiring For A 2017 Kia Soul
    My recommendation is to use a 4-diode universal towed vehicle wiring kit like # DM9523010-54. What this does is easily allows you to 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. This kit also includes a 6 way to 7 way coiled cord that will connect to your motorhome and your Kia Soul as well as, all the necessary hardware to install. You...
    view full answer...
  • 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 Light...
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  • 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...
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  • Troubleshooting Right Brake Light Coming On when Left Blinker Activated on Flat Towed Vehicle
    I would start by checking your ground wire on the motorhome and on the vehicle side of the Roadmaster # RM-15267, since that's the root of a lot of issues we see and should at least resolve the issue with the license plate light, but there's a lot going on here. I will also say that the diodes are not wire specific, meaning they can be used on any wire. To have the right brake light come on when the left blinker comes on is rather odd, since they should be on completely different circuits....
    view full answer...
    Image 1 for
  • Correct Tow Bar Wiring For 2022 Jeep Gladiator With LED Lights & ParkSense
    So a couple things here, as by blind spot indicators I believe you are referring to the ParkSense feature on your 2022 Jeep Gladiator. If so, you would not be able to use the Demco # DM9523010-54. The issue is that the brake and running lights will all be the same brightness with standard diodes. To avoid this, you'll need a Smart Diode kit from Roadmaster: - Roadmaster Smart Diode 7-Wire to 6-Wire Wiring Kit for Variable Voltage LED Tail Lights # RM63MR The diodes in this kit convert...
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  • 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...
  • Recommended 7 to 6-Way Flat-Tow Diode Harness for a 2004 Honda Accord
    I do have an option for you but there isn't any sort of custom, plug-in flat tow wiring harness for a 2004 Honda Accord. Instead, I recommend the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 which has the 7 to 6-way you're after so you can use a charge line like the Roadmaster Battery Charge Line Kit for Towed Vehicles part # RM-156-25. This kit comes with four diodes total, two for each side. In regards to the install, the instructions are not vehicle specific...
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  • Where to Find Price of Demco Flat Towing Products
    The 9519336 is the same as the # DM9519336 and the 9599006 is the same as the # SM99251. The price for these and all of our products can be found on the product page. We do not carry the 9523157. If you want custom wiring you can use the Curt # C96JR or if you want to stick with Demco you can use the universal # DM9523010-54.
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  • Demco Base Plate And Tow Bars For Flat Towing a 2021 Chevrolet Tahoe
    The Demco Tabless Base Plate Kit # DM9519342 is the base plate that will fit your 2021 Chevrolet Tahoe. I recommend using the Demco Excali-Bar III Non-Binding Tow Bar # DM9511013 to connect your Tahoe to the tow vehicle. You will need the Demco 4-Diode Universal Towed Vehicle Wiring Kit # DM9523010-54 to allow your Tahoe tail lights to function so that you do not have to use magnetic lights that tend to easily get damaged. A Roadmaster Automatic Battery Disconnect # RM-766 will allow...
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  • Parts Needed to 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. If you've...
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  • Best Flt Tow Wiring Kit for a 2023 Ford F-150 Hybrid with LED Lights
    Since your 2023 Ford F-150 has the LED lights I highly recommend the Roadmaster Smart Diode 7-Wire to 6-Wire Wiring Kit # RM38FR which has better diodes to make it compatible with the LED lights. The Demco Kit # DM9523010-54 has some really basic diodes which is why I recommend the Roadmaster over this. Demco doesn't list out fitment with LED lights but Roadmaster has a few diode kits and they say this newer one needs to be used for your truck. You'll also need the Charge Line Kit # RM-156-25...
    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 Round...
    view full answer...
  • 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 # BLU37TR 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...
  • Flat Tow Parts for 2021 Jeep Wrangler Using etrailer Invisible Base Plate Kit
    The etrailer Invisible Base Plate Kit with Removable Arms, # e98948 does not include safety chains. This is a custom-fit base plate that provides the needed attachment points for your tow bar. With this option, the tabs remain on tow bar arms and easily secure to base plate receivers with a quick turn. It is a simple, bolt-on installation with included hardware. For a complete flat tow kit for your 2021 Jeep Wrangler, you will also need the tow bar, safety chains, a wiring solution for...
    view full answer...

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