vadimivanovich wrote:Sounds like you have a grounding issue behind the instrument cluster. Look for the bundle of brown wires all coming together at one bolt on the body. Or just run a new ground to the instrument you're having trouble with!
I'm having all sorts of electrical frustrations. I think the majority of the system is dirty, which is especially bad for the various grounds. I have big hands so I'll have to disassemble the entire dash to get back there. Changing the multigauge ground from one earth pin to another on the body only made my issue worse, and for more confusion, when I switched it back, the problem I created persisted.
I understand the basics of electricity on a 12V system. I know how things 'should' work in an electrical system, regardless of the age of the wiring. But there's so many little things going wrong that I'm just about ready to toss in the towel and get a whole new harness custom made, being sure it will be backwards-compatable for an OM606 with the 603 injection pump. With blade fuses, because screw the bullet style.
I keep reminding myself this was a GE series harness, and that things were re-appropriated for the GD motor. But still, I'd really like to punch the guy who did the diesel install, because of all of the crappy DIY work he's done under the dash. There's half-assed stab ins wrapped in duct tape, theres dozens of cut wires that have either been spliced, soldiered or left loose. It'd be a lot easier to understand a wiring diagram if it hadn't been so badly botched.
I turn on my headlights -- only one of my low beams work and only the other one's high beam works -- and my temp gauge and fuel gauge spike. Neither city light work. When I flip the turn signal, the radio shuts off for a second. I flick on the dome light and I blew 25A fuse #8.
There's another headache -- I ended up shattering one of my Hella domes on reinstall. How are you supposed to get it back in the metal holder in the headliner when there's 3 grounds (brown) connected together and nowhere for them to go to get out of the way?
In better news, I have 4 new ABS fender flares on the way, 2 Canadian Army tail lights, front windscreen deflectors and both sets of rocker panels. And I'm saving up for all the body work.
But damn this electrical system.