Brake controller will have 4 wires to connect. (I quote Tekonsha wire colors, but many brands are the same)
- Blue wire will run to the back of the truck, and connect to the Blue (brake) terminal on the trailer plug (drill a hole in the firewall and run the wire under the truck)
- White wire is to frame ground. (find a screw under the dash)
- Red Wire taps into stop light switch (see pictures below)
- Black wire is battery feed, hook to stud in fuse panel under dash (through that same hole you drilled for the blue wire)
- Blue wire will run to the back of the truck, and connect to the Blue (brake) terminal on the trailer plug (drill a hole in the firewall and run the wire under the truck)
- White wire is to frame ground. (find a screw under the dash)
- Red Wire taps into stop light switch (see pictures below)
- Black wire is battery feed, hook to stud in fuse panel under dash (through that same hole you drilled for the blue wire)
Remember, the above colors are just a GUIDE. your colors may be different, read the instructions!
Tap into this wire with a side tap (scotch lock) for the brake light feed (red wire)
Stub below is power feed for brake controller, fuse that powers it is empty in picture, and circled