I will start by saying electrical work isn't my forte. So I am looking to wire in the brake light on my camper top to work. It is an LED bar in the center of the cap.

I was hoping to make a clean install through the left or right tail light and be done, but due to the blinker and the way it works, it isn't as easy. I don't want to run wires all the way from the back of the cab to the brake light there if I can avoid it. So I figure this is a good time to practice my electrical skills.

Basically, there are three wires. One for ground, one for runnning lights, and one for brake lights, which in turn flashes on and off when you have the brake and the blinker going. If I tie into this brake wire, when I turn on my blinker it causes the brake light on the camper top to flash. Is there a way to wire this in with a relay or something to avoid this?

 

You could do it with a couple of diodes. You'd need to tap the brake wire from both sides, with a diode in each.

On both brake wires put a diode, tie the output (striped side) of both diodes together and connect this to your LED bar.

Just make sure you get a diode that can handle the current of your LED bar. You may want to measure it with an ammeter if it doesn't say.

 

Just found a single wire labeled as the center high under my spare. It was white. Apparently it is made for the center lights on camper tops. Hooked it up and it works just like I wanted.

 

Excellent!

 

you did it the way I would, Tap into the pigtail for the trailer lights. Piece of cake.