onlyinajeep726 Posted October 16, 2013 Share Posted October 16, 2013 Ok guys, I have a slight (well hopefully slight) issue with my instrument cluster lights overall illumination and a couple of other things... Just some background, the entire harness inside and out is from a '90 XJ Laredo. I followed a write-up on here about mating the XJ's dash harness to the MJ's rear harness for the fuel pump and brake/tail lights. Those work flawlessly. The engine starts and the brakes/tails work. Anyway, the issue is the illumination for the HVAC panel, the instrument cluster and the clock light doesn't work with the parking lights or head lights on. Also, the turn signal indicators glow when the parking lights/head lights are on. The driver side turn signal indicator glows brighter than the passenger indicator. The turn signals do work but not the hazards. It's like some current is being back-fed or something. Fuses are good, all the connectors have been thoroughly cleaned with electrical contact cleaner. Grounds are good I'm fairly certain. The tach, temperature, gas and oil pressure gauges all work. Dome lights work but not when you turn the head light switch all the way over counter-clockwise... Anyway, I'm thinking faulty head light switch, as everything I mentioned above runs through that, correct? Link to comment Share on other sites More sharing options...
64 Cheyenne Posted October 16, 2013 Share Posted October 16, 2013 Quote: "turn signal indicators glow when the parking lights/head lights are on" Mine quit doing this when I replaced both front turn signal sockets, back feed was from there. My sockets "looked" good, but weren't. Miraculously, all my other interior lighting issues went away after that. I do suggest doing cruisers ground refresh, eliminates that possibility of bad grounds from there. Couldn't hurt....Then I might change out the switch. Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted October 17, 2013 Author Share Posted October 17, 2013 Grounds are done. I replaced the switch with a known good one but my signal indicators still glow a little when the lights are on. I am going to replace the front sockets since they're pretty rusted and one is actually broken. I'll see if that works better. :crossfingers: Link to comment Share on other sites More sharing options...
cruiser54 Posted October 17, 2013 Share Posted October 17, 2013 Good plan. Link to comment Share on other sites More sharing options...
onlyinajeep726 Posted October 17, 2013 Author Share Posted October 17, 2013 Well, I think I have the problem mostly solved... Snipped the old, crappy sockets off and soldered some good ones in and shrink wrapped them. While I was there, I ran a 12 AWG wire straight from the dash, through the firewall and affixed to the frame under the hood. The turn signal indicators still glow ever so slightly with the lights on, but not enough to bother me. Turn signals, hazards, etc. all work now as well as instrument cluster lights. Link to comment Share on other sites More sharing options...
cruiser54 Posted October 17, 2013 Share Posted October 17, 2013 Click on the link in my signature and go to the write-up titled " Improving the Instrument Panel Ground". Link to comment Share on other sites More sharing options...
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