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  1. Tow Bar Wiring
  2. Ram
  3. 3500
  4. 2021
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FITS 2021 Ram 3500
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: $220.40
Tow Bar Wiring
Confirmed to Fit
2021 Ram 3500

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Shipping Weight: 5 lbs
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Call etrailer.com at 1-800-940-8924 for expert service. We are your Ram tow bar wiring experts, and offer a great price. etrailer.com carries a complete line of Demco products for your Ram 3500 2021. Demco 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Adapter Cord part DM9523010-54 from Demco can be ordered online at etrailer.com. Complete tow bar wiring installation instructions and technical support.
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  • Reviews (55)
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2021 Ram 3500 - Demco 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Adapter Cord

  • 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 Ram 3500 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

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   (55 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:

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:
2017 Cadillac Escalade

Great products and quick delivery.



by:
Jeep Cherokee

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



by:

Harry

2/19/2023

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



by:

Works great, no issues



by:

Good quality.



by:

Exactly what I needed



by:

Work out excellent



by:

The parts came quickly and they were exactly as described



by:



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by:

excellent service



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by:

Very fast service!



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by:
2020 Jeep Gladiator



by:


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