1976 GMC C/K Series Pickup Vehicle Tow Bar Wiring

Name: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
Brand: Roadmaster
SKU: RM-15267
Price: 156.17 USD
Availability: InStock
Rating: 4.76049063912201 (3098 reviews)

Filters

Filters: Splices into Vehicle Wiring

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

3098 reviews

Code: RM-15267

$156.17

Retail:$226.99

You Save: $70.82

In Stock

Flat Tow Wiring Harness Specs:

Splices into Vehicle Wiring
Diode Kit
Universal Fit
7 Blade to 6 Round

Features:

This complete kit includes everything you need to connect your RV's tail, brake, and turn signal lights to your towed car. Diodes prevent damage from electrical feedback. Includes 7-way to 6-way coiled adapter cord and 6-way socket.

More Information >

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 4-Way Flat Connectors

3098 reviews

Code: RM-154

$102.19

Retail:$129.78

You Save: $27.59

In Stock

Flat Tow Wiring Harness Specs:

Splices into Vehicle Wiring
Diode Kit
Universal Fit
4 Flat

Features:

This wiring kit carries your RV's brake and turn signals to your towed car's tail lights. Diodes prevent damage from electrical feedback. Connects RV and towed car with 4-pole flat plugs. Includes installation hardware.

More Information >

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

86 reviews

Code: DM9523010-54

$229.09

In Stock

Flat Tow Wiring Harness Specs:

Splices into Vehicle Wiring
Diode Kit
Universal Fit
7 Blade to 6 Round

Features:

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 adapter cable and 6-way car-side socket.

More Information >

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

3098 reviews

Code: RM-152-1676-7

$256.47

In Stock

Flat Tow Wiring Harness Specs:

Splices into Vehicle Wiring
Diode Kit
Universal Fit
7 Blade to 6 Round

Features:

This complete kit includes everything you need to carry your RV's brake and turn signals to your towed car's tail lights. Diodes prevent electrical feedback. The hybrid coiled/straight adapter cord is ideal for tow bars with channel guides.

More Information >

Curt Universal Tail Light Wiring Kit for Towed Vehicles - 4-Way Flat Connectors

118 reviews

Code: C63CR

$80.08

Retail:$132.95

You Save: 40%

In Stock

Flat Tow Wiring Harness Specs:

Splices into Vehicle Wiring
Wiring Harness
Universal Fit
4 Flat

Features:

Get a head-start on wiring your towed car before you even get the installation started. This kit comes with butt connectors pre-installed and ready to splice into your wiring. Integrated block diodes protect your vehicle from electrical feedback.

More Information >

Roadmaster 6-Diode Universal Wiring Kit for Towed Vehicles with Separate Lighting

60 reviews

Code: 154-792-118158

$185.46

In Stock

Flat Tow Wiring Harness Specs:

Splices into Vehicle Wiring
Diode Kit
Universal Fit
6 Round

Features:

Connect your towed car's lighting system to your RV's to get the brake lights and turn signals required for towing. Designed for use with vehicles that have separate brake and turn signals. 4-Pole flat loop and wiring converter included.

Tech Tip:

This kit is designed to allow you to use the amber turn signal on the towed vehicle for those vehicles that have separate brake and amber turn signal lights.

More Information >

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

3098 reviews

Code: RM-152-98146-7

$206.71

In Stock

Flat Tow Wiring Harness Specs:

Splices into Vehicle Wiring
Diode Kit
Universal Fit
7 Blade to 6 Round

Features:

This complete kit includes everything you need to carry your RV's brake and turn signals to your towed car's tail lights. Diodes prevent electrical feedback. The straight 7-to-6-wire adapter cord is ideal for tow bars with channel guides.

More Information >

Roadmaster Diode 7-Wire to 4-Wire Flexo-Coil Wiring Kit

138 reviews

Code: RM-15247

$153.79

Retail:$217.92

You Save: $64.13

In Stock

Flat Tow Wiring Harness Specs:

Splices into Vehicle Wiring
Diode Kit
Universal Fit

Features:

Diode kit allows you to use your vehicle's tail lights and wiring system while preventing feedback from your RV. Wires 2-wire and 3-wire systems to operate as a combined lighting systems. Includes 7-wire to 4-wire Flexo-Coil electrical cord.

More Information >

Explore Expert Info

on Flat Tow Wiring Harness

Videos

for Flat Tow Wiring Harness

Help Articles

for Flat Tow Wiring Harness

Expert Answers

for Flat Tow Wiring Harness

An In-Depth Look at the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit

An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles

Breaking Down the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit

Choosing the Right Tow Bar Wiring

Roadmaster Manufacturer Spotlight - Getting Started With Your Flat Tow Setup

Breaking Down the Blue Ox Patriot Portable Flat Tow Brake System

Installation: Blue Ox Patriot Portable Flat Tow Brake System on a 2022 Ford F-150

How to Install the Roadmaster Universal Hy-Power Diode Wiring Kit on a 2021 Jeep Wrangler

Setting up the Curt Custom Tail Light Wiring Kit for Towed Vehicles on a 2023 Jeep Wrangler

Complete Breakdown of the Roadmaster Battery Charge Line Kit for Towed Vehicles

Review of Blue Ox Towed Vehicle Battery Charge Line Wiring Harness - BLU44ER

Roadmaster Brake-Lite Relay Kit Comprehensive Review

Best Vehicles to Flat Tow Behind an RV

Brake Controller 7- and 4-Way Installation Kit (ETBC7)

Trailer Wiring Diagrams

Flat Towing Package for 2007-2018 JK Jeep Wrangler and Wrangler Unlimited

Must-Have Flat Towing Components

Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)

We Used 34 RV Tow Bars, and These are the Best for Flat Towing

Roadmaster Vehicle Specific Base Plates

Wiring Trailer Lights with a 6-Way Plug (It's Easier Than You Think)

Flat Towing Package for 2012-2014 Honda CR-V

How to Choose a High-Low Adapter

The Definitive, Step-by-Step Flat Towing Setup Guide

Does the Curt Base Plate Kit Work w/ the Ford Modular Bumper on a 2025 Ford Bronco Everglade?

Yes, it does John. So long as you have the Ford Performance Heavy Duty Modular Front Bumper with the tow hooks, the easiest way to flat tow it is to use the Curt Custom Base Plate Kit item #C59JR. This adapter connects right to the tow hooks without…

view full answer...

Which is Better Roadmaster or Blue Ox Tow Bar

Both the Roadmaster and Blue Ox tow bars are great options. But if it was my decision to make I would go with the Blue Ox Avail part #BX7420 as we have found that the Blue Ox tow bars are a little easier to connect and disconnect from. Also this tow…

view full answer...

Choosing Between the Brake Buddy Select 3 and the Blue Ox Patriot Supplemental Braking System

When it comes to choosing between the Blue Ox Patriot #BLU37TR and the Brake Buddy Select 3 #HM39524, these systems are extremely similar in their setup and functionality. Both of these systems provide proportional braking in a compact and easy to…

view full answer...

Flat Tow Setup for 2015 GMC Acadia

Hi Keith, welcome back! It looks like you went ahead and ordered the following: -Demco Classic Base Plate Kit - Fixed Arms #DM9518302 -Roadmaster Falcon 5250 Tow Bar Adapter Brackets for Demco Classic Base Plates #DM9523023 -Roadmaster 4-Diode…

view full answer...

Hey Christian, welcome to the world of RV-ing! So in addition to the Roadmaster Nighthawk #RM-676 you're also goin to need: - A baseplate kit, like the Roadmaster Direct-Connect Base Plate Kit #RM-521453-5. These attach to the Jeep itself so you…

view full answer...

Parts Needed to Flat Tow 2024 Chevrolet Silverado 1500 Trail Boss

Hey Jimmy! I would be happy to help you get setup to flat tow your 2024 Chevy Silverado 1500 Trail Boss. You will need a tow bar, base plate kit, safety cables, wiring, and a supplemental braking system. I recommend the following: -Roadmaster…

view full answer...

Hey Steve, thanks for reaching out! The Roadmaster Direct-Connect Base Plate Kit #RM87NQ fits your 2025 Ford Maverick as long as it's the Hybrid model that doesn't have the engine block heater. It doesn't come with the 6-Pin connector,…

view full answer...

What is the Difference Between the Blue Ox Patriot BRK2019 & BRK2022?

Gladly! The difference between the Blue Ox Patriot 3 Radio Frequency, Portable Braking System BRK2019 and the Blue Ox Patriot Radio Frequency, Portable Braking System #BLU37TR is that the Blue Ox Patriot 3 RBRK2019 is older, no longer available, and…

view full answer...

Best Flat Tow Setup For 2015 GMC Acadia

Hello Damon, thanks for reaching out. It looks like both the fwd and awd models of the 2015 Acadia can be flat towed. I will start with a parts list followed by a few notes about towing your Acadia. - Demco Classic Base Plate Kit - Fixed Arms…

view full answer...

Is There Tow Bar Lighting and Trailer Wiring Solution for 2015 Jeep Wrangler Sport S

Hey Teo, we have a solution for you but we don't have any harnesses that work as both a tow bar lighting kit and a trailer wiring kit. So what you'd want is the Curt part #C96JR for the tow bar lighting and then for the trailer wiring…

view full answer...

Replacing 6-Way on Trailer With 7-Way Connector

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

view full answer...

Complete Flat Towing Setup for a 2025 Ford Ranger XLT 4X4

Hey Gary, yes, we do have a base plate for your 2025 Ford Ranger! What you'll want is the Roadmaster Direct-Connect Base Plate Kit #RM23DQ. This base plate has removable arms, has hidden brackets for a non-obtrusive design, and has a simple…

view full answer...