by Okie Smokie » Sun Jun 24, 2012 5:30 pm
I have a '91 that I'm working on. The fuel gauge doesn't work at all most of the time. Every now and then it starts to come up briefly then drops back out again. I know the low fuel light works when the level gets low enough. First off, my wire colors don't match the schematic. I have two gray wires that go to ground, but they're in different locations in the plug than what the schematics show. I have one wire that is blue w/white that's giving me 8 volts. Shouldn't I be getting 12 volts? Where is the hot wire coming from? Fuse panel or gauge? The fourth wire is green w/black and is neutral. I think it should be going back to the gauge, but when I apply voltage to it nothing happens. Please give me some insite as to how it's all supposed to work.
Thanks in advance.
'93 W250 Extended Cab, P7100, F1 Spartan, Extra Air, Tim's cooler tubes
'92 D250 Reg Cab, Flat bed, 5 speed, Bone stock
'91 D250 Reg Cab, Auto, Bone stock