Hey new here so bare with me. I have an 03 lb7 crew cab. i recently swapped my cali emission engine, ecu, engine harness and fuse box to a federal. only reason in did the fuse box was because it came with the harness. problem i original had with the interior lights was my cluster lights would random go out and come on a night. and my dome light would randomly not work. The problem i am having now is all lights work normal with ignition on and engine off. once engine is running my cluster lights dont work and my dome lights dont work. when i push a button on my dome lights to turn one on it does not come on but my exterior mirror lights come on. and only one of my rear dome lights come on when i push that button. all other buttons turn out side lights on. could it be in fuse box or did something go wonky with the wiring in the truck. it has sat for about 6 months till i got the engine and swapped it out. any help is greatly appreciated. or just a wiring diagram would help. i am good with wiring just need an accurate diagram.
dome and interior lights wiring.
- Thread starter laineymaxdiesel
- Start date
You have an 03 LB7. What did the doner harness and fuse box come from?
I feel like this is more of an interior issue like the light switch or the dash wiring.
I feel like this is more of an interior issue like the light switch or the dash wiring.
thank you for the reply. it was as well from an 03 lb7. it was an extended cab truck. mine is an crew cab.
thank you for responding. checked pins they are all good. going through grounds now but wondering if its an issue with bcm