eHow launches Android app: Get the best of eHow on the go.
Summary: Wiring from a trailer to a truck provides brake and tail lights. Connect truck trailer electrical wiring with tips from a custom car repairman in this free auto maintenance video.
Kirby Witt has been involved in the auto industry for many years. His grandfather had a Mobil Service Station for 60 years. At age 17, Kirby started his first auto body shop in South...read more
"Next we're going to plug the wiring from the trailer into the truck. What this is going to do is give us brake lights, tail lights, turn signals on our trailer just like in our vehicle so people behind you still know if you're stopping, if you're turning. It's just a safety precaution. And as far as I know you have to have lights on your trailer in every state. This is the type of plug we're going to use. This is a plug that's set up for not only lights but also trailer brakes. And this is where we have have the plug in mounted to the vehicle. And just on the top of this there's a raised slot and in here that's on top. You're going to slide that in. And the cap on this actually holds this in from popping out. It hooks on to that raised slot on top. There are a few different kinds for just basic lights. You can have a flat plug like this one. Nice thing about this connection, if you maybe have a different trailer, most of your utility trailers will just have a flat plug, you can still use the same connection there. If you have a trailer brake on something larger, a trailer like this that's a car trailer, equipment trailer, that's going to be wired to this connection, and you're going to have a box in the front of your truck that you can set the control on the electric brake on the trailer as to how much pressure you want that brake hitting when you hit the brake. You can adjust it if you want more or less. Which will definitely help you stop a lot better instead of having all the weight on the trailer pushing your vehicle forward, it's actually stopping with your vehicle."
eHow Article: Connecting Truck Trailer Light Wiring