Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Hopkins Tow Bar Wiring - HM56103

Wire your vehicle and get the signal lights required for flat towing without having to splice into your wiring with this custom, plug-in harness. Integrated diodes prevent feedback from RV for safe operation. Wires as combined lighting system.

Features:

• Lets you wire your vehicle to accept your RV's tail, brake, and turn signal lights for flat towing
  • Wires towed car as combined system so that brake and turn signals travel along same wire
  • Provides 4-way flat plug at front of towed car to connect to motor home
• Plugs in quickly and easily - no cutting or splicing of wires
  • Connection points are located behind your vehicle's tail lights
• Prevents electrical feedback to safeguard towed car's electrical system
  • Weatherproof box keeps built-in diodes protected
• Won't interfere with electrical system when towed car is not hooked up to RV
• Custom designed for your vehicle
• Includes wiring harness, mounting bracket, and installation hardware
  • Extension loop for connecting towed car to RV is sold separately
  • Brake light relay (RM-88400 - sold separately) may be required if used with supplemental braking system
• 90-Day warranty

Wiring Your Towed Car with Hopkins

Wiring your car for flat towing has never been easier. No more testing wires or splicing into your electrical system. No need to painstakingly position multiple diodes beneath your vehicle. No worries about voiding your warranty. With this custom-fit towed vehicle wiring kit from Hopkins, all you have to do is plug the harness into your vehicle's existing wiring, which is located behind your car's tail light assemblies. No cutting, tapping, or splicing is required.

After plugging in the wiring harness, use the included bracket to mount the 4-way flat connector at the front of your towed car. An extension loop (sold separately) is required to connect your towed car to your RV.

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 harness, 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 harness wires your vehicle as a combined system, 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.

11156103 Hopkins Plug-In Simple Dinghy Towing Harness

Replaces 56103

This Product Fits The Following Vehicles

• 2007 - 2013 Chevrolet Avalanche
• 2014 - 2014 Chevrolet Suburban
• 2007 - 2014 Chevrolet Tahoe
• 2007 - 2014 GMC Yukon
• 2014 - 2014 GMC Yukon XL
• 2007 - 2013 Chevrolet Suburban 1500
• 2007 - 2013 GMC Yukon XL 1500
• 2007 - 2013 Chevrolet Suburban 2500
• 2007 - 2013 GMC Yukon XL 2500