NEED HELP with wiring brake controller

[93DodgeCummins]

I have 93 dodge cummins. Im trying to wire up the wiring that goes to the tail light system. Where is the place to wire it in?

[Philip]

Our trucks didn't come with the brake controller wiring installed. You need to run a wire back to the rear for that.

[93DodgeCummins]

yep i wired it in by cutting the white wire that comes out of the switch the engages when you step on the brake. Then i sodered in a wire and sodered it all back together. I got everything working. So im good to go.