Voltage Gauge Issues
Replaced the broken and bent gauges on my 91 YJ with a used gauge cluster from a salvage yard.
The old cluster had bent needles and inaccurate reads on everything except the temp gauge.
During install, I cleaned up the metal terminals on the "plug" that pushed into the back of the cluster. I also took a pencil eraser and cleaned off the connection ends on the "circuit board" panel on the back of the cluster.
Once installed, Every gauge is working and reading correct except two:
1. Fuel: not reading correctly due to 20 Gal tank Mod. Livable for me and not an issue.
2. Voltage: Reads at 10V at idle and at rpm and speed. I tested the charge at the battery and i am getting a full 14.4v charge at idle. Drove to AZ and had the battery tested - it was fine.
Hypothesis: Since the gauge was claimed to be "working" when removed from the donor YJ, and all the other gauges are accurate and functional, I am ruling out a bad gauge for now. Since I cleaned up the connection terminals at installation, I am ruling out corrosion at the connectors. I am left with the wire and/or connection for the wire that feeds the signal from the battery to the gauge.
Issue: Can anyone help guide me on identifying that wire? Where does is originate? Color?
Suggestions and help are greatly appreciated; however, those who would post, "Just live with it" type posts need not respond. I want an accurate, working gauge.
♔ 91 YJ "Alice" 4.0L, AX-15, NP 231 Flange, Adams Driveshafts F/R, 2.5" OME 36Rs, 5/8" /f12 Booms, 33" Yoko ATs, 4.10 D30/35 Aussie Lockers F/R
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♘ 05 LJ Rubicon "Ghost"
♠ Luck Favours The Prepared ♠