Installing a Leer truck cap on your vehicle adds security to the items stored in the bed as well as a distinct look that accents the body of the vehicle. Although they're easy to install and bolt onto your truck, the wiring process isn't always as straightforward, and making sure the third brake light is operating correctly is not only a legal issue, but an aesthetic one as well.
Things You'll Need
- 12-volt test light
- Blue scotchlok connectors
Pop the hatch on the shell and locate the wiring for the third brake light. It typically runs through a rubber seal around the edge of the shell and then down to the bottom, where it's accessible.
Crawl underneath the vehicle and locate the wiring that runs to your taillights. Have your assistant hold the brake pedal while you probe each light with the 12-volt test light. If the light goes on, then you've found a positive wire for the lights. Just to be sure, have your assistant repeatedly push on and release the pedal. If your light flashes in accordance with the assistant's pedal work, then you've found the right wire.
Run the red wire from the shell through the bed and to the brake wire in the wiring harness. Place the blue scotchlok connector on the brake wire and the red wire, then clamp it down with a pair of pliers.
Find a black wire in the wiring harness and repeat the process in Step 3 with the black wire from the shell. Then have your assistant step on the brake pedal. If the third brake light illuminates, then you've done the job correctly.
- Photo Credit NA/PhotoObjects.net/Getty Images
How to Install a Truck Cap
Truck caps not only add aesthetic value to your pickup truck, they also come in handy by helping to safely carry precious...
How to Install a Bed Cap on a Toyota Tacoma
A bed cap is a fiberglass, aluminum or steel shell installed on top of a truck's bed to protect cargo from the...
How to Wire a Truck Canopy Dome Light
Wiring up all the lights in your truck canopy will allow you to easily see around your truck bed in low-light conditions....
How to Wire Lights on a Truck Cap
Truck caps, or camper shells, add a sense of style and beauty to a truck as well as offer necessary and welcome...
How to Remove a Truck Cap From a Truck
Mostly made of fiberglass and not overly heavy, truck caps are awkward and rather bulky to remove. There are many people who...
How to Remove a Leer Tonneau Cover
The bed of a truck is pretty convenient to haul large items such as wood, furniture or anything else you want. But...
How to Wire a Third Brake Light on a Truck Topper
A third brake light, mounted between and above the main taillights, creates a "triangle" of light. Studies have shown that this arrangement...
What Are Truck Cap Replacement Parts?
To maintain the value of a truck cap, it is best to replace any damaged parts. Truck cap replacement parts range far...
Connecting Truck Trailer Light Wiring
Wiring from a trailer to a truck provides brake and tail lights. Connect truck trailer electrical wiring with tips from a custom...