Originally Posted by Wh0caresn0tme
So the manufacturer didn't create any wiring docs, or they just don't provide them to users?
Each line has "shop drawings" that show how a particular year/model is to be wired. Some lines even have color codes; while others just use a common wire size for all runs of that amperage.
Since they are shop drawings they are proprietary and not released to the general public (in fact even the dealerships don't get copies unless requested for a problem they can't solve).
I would be looking for a broken or corroded ground wire.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW