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Old 09-20-2005, 01:03 PM   #1
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gages not working

Recently bought an 89 YJ and a couple of the gages dont work, looks like clock and electric system gage work but not oil pressure or engine temp. I'd like to check the fuses but they are not labeled real well. How do I tell if its fuses or something else?
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Old 09-20-2005, 01:10 PM   #2

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Get thy self some sort reference manual at your local auto parts store if you don't have one already. See which fuses does what, Then I would start pulling fuses, and see if any are blown. Then if no luck there.. check all the connections, and the grounds. I have never used one, but there are power testers that will allow you to test for current, that might help as well.

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Old 09-22-2005, 08:39 PM   #3
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It seems that I reply about this same topic time and time again. I had the same problem with my 87 Yj and found thast it was corrosion in the guage cluster. Real easy to remedie. Pull the guage cluster out and locate the plastic sheet with the copper wires running through it. Unplug the connection to the wiring harness and check for corrosion. If you find any just use a little sand paper and clean it off. It is a good idea to use a little electrical grease on the connections when you put it back together. I had to dig a little deeper to find my corrosion. I pulled the black clips that hold the plastic sheet to each guage and found corrosion under there. Give it a try, it is free and will take about an hour.
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Old 01-30-2017, 09:48 PM   #4
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on my 87 yj the wires are as follows:
Violet- eng. Temp.
Tan- fuel
blue- oil pressure
wht w/ black trace- ignition on
black- ground
orange- illumination
pink- clock; constant hot (also only fused wire)
each guage has a ground and its own specific wire as well
as a ground wire except the volt meter which has two igniton "on"
wires (whr w/ black trace) and a ground.
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