FRED555 wrote:
ronfisherman wrote:
The dark blue wire is correct wire for output to trailer brakes. Light blue wire is to activate the brake controller. Hooking to the brake pedal switch will cause it to fail. You will find many threads on the internet about chimes going off in MDT's and how to fix it.
If we have to use the light blue wire in the harness on the frame rail where do I find it in the cab? It must somehow get to the fuse panel and eventually to the same wire from the brake pedal?
Very Frustrated.
Thanks,
A piece to 18 gauge wire about 15' long will make the connection. Run it threw hole in firewall just below the brake master cylinder.