Hello my first post We recently purchased 1992 case 580 Sk Doing a serious clean up and getting everything in working order Right now I have issued with the rear running lights (outer two) I have a console switch work lights by the transaxle shifter And one on the column,to the lower left of the steering , has the running lights, front and rear positions,hazards switch I turn the switch to the first position front running lights ok Turn to the rear and blows the fuse I did remove the lights at the rear plugs so I could see if lights were the problem I need a good way to diagnose Step by step if possible Thx Phil
Well, you started off great. Removing the bulbs. Now go further. Follow the harness, disconnect each sides sub-harness connector. Check that feeds' continuity to ground after every step. Pay close attention to clipping, clamps corners and bends. There's an unwanted ground somewhere. Just gotta get there. P-clamps where the vinyl insulation is gone are very common on older machines.
Thx for the reply I’ll trace the wires and see where they lead. We removed all the plastic covers and headliner , cleaned though, so everything is exposed and cleaned (30yrs worth) want to put the wiring to bed before I put everything back in place. Not terrible to take out , but don’t want to make a habit of it. The cab is where you live when you’re operating. Thx Phil
Too bad more folks don't look at it like that.
Checked the wiring last evening Found nothing that stood out. I removed the switch ,took a short wire and tested 12 from harness to front a rear lights And lit right up Think bad three position switch I tested ohms was making correct readings I’m sure it’s original . What do they look like in there could the short out? It’s on a plastic mounting plate