I am having issues with my up fitters now. I wired the BD S8 30" light bar behind the grill. It is wired to Aux 1. The first time I hit the dirt it lasted about 30 mins before blowing the fuse. Next time I went out it lasted about 2.5 hours and then blew the fuse. Also, I am running two BD S2 sport in the GJ third brake light. Those are wired through the cab via the pass thru wires to Aux 5. Those also blew a fuse about 2.5 hours into the run. I'm curious as to why. I've checked all my wiring. I used the sodier tubes to connect everything and then heat shrinked the wires for extra protection. Does anyone think it's possible there is a short from the Upfitter wire in the engine bay to the switch in the cab? How do I diagnose this?
Thank you everyone in advance!
Learn how to do this stuff the right way. Consult with Tony Candela. Tony is an automotive electronics expert. Here’s a link to his site, directing you to his books on wiring:
https://ceautoelectricsupply.com/?s=Book
As Gopher suggested, use a relay so that the aux switch only acts as a switch and not power. Power is run from the battery, WITH IT’S OWN INLINE FUSE, then to the relay.
Tony sells only high quality products. He will also talk to you on the telephone. Get the books...lotsa knowledge there. Buy your products from Tony...they are quality.
You own a quality vehicle and aux lights; use quality wiring parts. You will thank me later.