There should be a one wire fix located on the rear of the top of you engine passenger side by fire wall it looks like a bolt 8/32 or so sticking out in the area there should be a black or dark blue wire with a boot on the end this goes to your guage just put the boot on the bolt and your guage should work- good luck[addsig]At least you guys know how warm or cold your jeeps are running. My gauge doesnt work anymore... :-( And it always read all the way to the left... Sucks. I havent taken the time to fix it yet.