I was hooking up an electric trailer brake thing w/ a facory harness...i didn't have any brake signal and while checking it i arced two wires together. Now the brake lights dont come on inless the key is on and the third brake light won't come on at all. I was wondering if there was a fuse somewhere for the brakes lights if anyone has a wiring diagram for the circuit. Thanks in advance.

 

All years are diff for diagrams.
Best bet is to check ALL fuses under/side of dash and under hood. There must be a popped fuse somewhere's.

 

yep, check fuses.

wayy off topic, but do you by chance race allisons? my dream boat is an allison...

 

thanks, its an 05 2500. I do race allisons...we have a couple of them