« Reply #1 on: June 03, 2009, 07:50:07 PM »
If you pull the part in question, you may find a part number on it. Some electrical parts have small schematics on the case. I took a quick look at my FSM for '95 YJ and did not see any relays in the instrumentation circuit wire diagrams.
What year YJ are you working on?
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95 YJ, 31 BFG ATs, 4.0 TB & spacer, Banks header, DynoMax CAT back, 19# inj, AEM CAI, 20 gal mod, Optima yellow
98 TJ, 35 BFG Krawlers, 4.0 liter, ax15, atlas 5:1, armor, Super 88 (under construction)
96 XJ Cheep Cherokee, 33s, 4.0 liter, AW4, future project
89 Waggy, 360 V8 727 dana 44s, it runs