by dpuckett » Fri Jul 04, 2008 1:55 pm
I swapped a known good AC heat control unit from my d350 to my W350, and the control unit wasnt the problem. As long as I turn nothing on, I am fine. The instant I push the VENT button, 'POP' goes the fuse. With everything else unhooked, and a known good control unit, this tells me it's in the wiring.
When installing my headlight switch (W350), I noticed the little black single spade connector (with 2 wires going to it) had one wire with the insulation burned off it; the other wire was fine. Could this be related to my AC issues? As far as I can tell in my diagrams, the grounds all run together onto one common point.
I hooked an ohmmeter to the hole for the fuse. I stopped at 1000ohms. The wiring looks good, no obvious burned connections (anywhere along the line). What gives? I am at a loss now, short of tearing all the tape off every wire loom that is even remotely related to the AC, but I dont want to if there is an alternative. The instant fuse popping makes me think it is grounding out somewhere......
Any ideas? Electrical stuff hits me about mid-forehead- I understand some of it, but most of it is beyond my current skill level.
DP
His- 93 W250 club cab LE, auto to Getrag conversion, piston lift pump, 3.54 LSD. 400k+
Hers- 04 QC 4x4. Built auto, Triple Dog, Air Dog. Funny Round truck that aint so quiet.