Trailer wiring

[tmthunder]

I am looking to add some lights to the back of my enclosed sled trailer. Is there a wire in our 7-pin connectors for back-up lights? I also want these lights on a switch so I can use them for loading/unloading the trailer. I have found that the yellow center pin wire is an accessory wire according to a diagram so I was thinking of using that wire to supply the power and use a switch. Just think it would be nice to have them light up when in reverse as well without having to get out of the truck and turn the switch on in the trailer. Thanks for the help!!

[JeffB2002]

Try this diagram

[tmthunder]

Thanks that helps!!! Now does anyone know what the factory back-up light wire is? Thanks again Jeff that is perfect!!

[JeffB2002]

Pull the taillight....You will see it. You can also tap the center Aux pin on your 7-pin. That is what I did for my reverse lights on the Firestorm Bar.