MJfan94 Posted January 12, 2016 Posted January 12, 2016 Dash lights and taillights are not illuminating, already tried a new headlight switch, bulbs are good. The fuse keeps popping and ive already tried the upgrade ground under the dash. I'm now lost on what to try next.
gogmorgo Posted January 12, 2016 Posted January 12, 2016 Sounds like you've got a short somewhere. With a good fuse in there, do the lights come on ever? Is there some combination of things that triggers the fuse blowing (i.e. hitting the turn signal with the headlights on,)? Any other electrical issues (even if you don't think they'd affect the lights, you never know)? When you replaced the headlight switch, did the wiring connector look melted? If I could direct you to a circuit diagram, would that be helpful?
MJfan94 Posted January 12, 2016 Author Posted January 12, 2016 Yeah a diagram would be great. The headlight switch looked fine. The fuse only blows when i turn the day time running lights or headlights.
gogmorgo Posted January 13, 2016 Posted January 13, 2016 Sorry for not getting back sooner, forgot I had curling tonight. https://skydrive.live.com/embed?cid=DB29AEECD6176EB4&resid=DB29AEECD6176EB4!7603&authkey=AOnZxW_3TJTtnPY This is a bunch of useful stuff, courtesy of Blue88comanche. There's a wiring diagram in there I promise. The wire colours may not be completely accurate, depending on what year your MJ is (the manuals are for 88) but the light circuits should still be the same. I've used them countless times for my '91.
MJfan94 Posted January 13, 2016 Author Posted January 13, 2016 Thanks so much, I'll start working on the wiring harness tomorrow after work, hopefully it's going to be something simple.
cruiser54 Posted January 14, 2016 Posted January 14, 2016 Got a trailer plug dangling out back somewhere?
MJfan94 Posted January 14, 2016 Author Posted January 14, 2016 The trailer plugs are good, but after removing the lower part of the dash and looking up under the dash I found my problem. There are several spliced wires and some exposed wires. Then it came to me that the original owner was telling me when I bought the truck that at one point he was trying to install an aftermarket cruise control system in it and I guess he didn't know what he was doing. After cleaning everything up, the fuse has not blown
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