1. Tow Bar Wiring
  2. Demco
  3. Diode Kit
  4. Splices into Vehicle Wiring
  5. Universal
  6. Tail Light Mount
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
lowest price pledge
Retail:$223.00
Our Price: $181.48
You Save: $41.52
Tow Bar Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

This item qualifies for Free Shipping
Shipping Weight: 5 lbs
Quantity: 
Demco Tow Bar Wiring - DM9523010-54
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

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 800-298-8924 for expert service.
  • All Info
  • Reviews (2)
  • Q & A (6)
  • Photos
  • Why etrailer?

Demco Tow Bar Wiring - DM9523010-54

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

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:  5.0 out of 5 stars   (2 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 844801



- DM9523010-54
by:

excellent service 827532


2
2

Ask the Experts about this Demco Tow Bar Wiring

  • 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...
  • 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...
  • 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...
  • 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...
  • 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...




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality tow bar wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate tow bar wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Edited by:
Lindsey S
Expert Research:
Jameson C
Video Edited:
Jacob T
Test Fit:
Shane H
Test Fit:
Robert C
Written by:
Kristina F
Video by:
Jacob H
Video by:
Aidan B

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.