Having some odd issues, the right headlamp has both upper and lower corner lights stuck on, both filaments, but my turn signal does work. though sometimes it hyper flashes, the drivers side low beam dips in and out from being stuck on to operating normally or just not operating at all, and this lights sticking behavior is observed with the BCM unplugged (7-connector BCM), its a Single cab long box with a 4.8L and an unknown trim level, Manual windows/locks/no remote entry or anything like that, only "fancy" thing its got is onstar and functional AC (manual climate controls). any help so i can begin debugging this? i pulled out about 5 lbs worth of aftermarket modified junk from under the dash, and found 5 wires folded together and taped to the under-dash harness, one of them is a Red W/BLK Stripe which i believe is always on hot.
well that was a record time diagnostic i have hotside voltage on 3 of the 4 pins of the headlamp relay and direct continuity to the headlamp fuses and to pretty much all forward facing exterior lighting except the highbeams lol. is there supposed to be a cover on the underhood fusebox?