Quickly and easily connect your towed car's lighting system to your RV to activate the signal lights required for towing. This custom harness plugs directly into existing wiring - no cutting or splicing. Operates as combined lighting system.
Typically, wiring your car for flat towing is a tremendous chore. You have to position and mount multiple diodes beneath your car and then splice into the car's wiring. Before cutting and splicing, though, you have to use a circuit tester to identify each wire. This must be done for the wires carrying signals from your running lights, brake lights, and both turn signal lights. And don't forget to jump the diodes so that the running light signal is sent to both sides of your car.
Or...you could just plug in the TrailerMate wiring harness. This custom-fit system plugs into your GMC Canyon's existing wiring harness, which is located behind your car's tail light assemblies. No cutting, tapping or splicing is required. The wiring around the plugs is encased in durable convoluted tubing, making it easier to handle and safer to route as well.
After plugging in the wiring harness, use the included bracket to mount the 4-way flat connector at the front of your towed car. Then hook up to your RV with the supplied wiring extension, and you're good to tow. Note: The extension included with this system requires that your RV have a 4-wire flat trailer connector. If your RV has a 7-pole round connector, or another type of connector, then an adapter is required.
Some automobiles operate on a three-wire system, wherein the brake signal and the turn signals travel along different wires to illuminate different lights. This is referred to as a "separate lighting system." When you hook up for flat towing using the TrailerMate 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 GMC Canyon will still function as designed when not hooked up to your RV.
Because this harness wires your GMC Canyon 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.
When you're not flat towing your car, the TrailerMate wiring harness can remain on your GMC Canyon; it will not interfere with the electronics. And if you ever tow a trailer with your car, you'll be wired and ready. The TrailerMate system comes ready to accept 4-flat wiring (TM85350 - sold separately) at the rear of your GMC Canyon so that you can hook up a trailer quickly and easily. Just plug in the add-on 4-way trailer connector, and you're good to go.
Average Customer Rating: 5.0 out of 5 stars (1 Customer Reviews)
by: Jim Y04/27/2013
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Easy installation and perfect fit 78170
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