coil-relay-starter Wiring Help - Jeep Wrangler Forum

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Old 09-14-2012, 10:25 AM   #1
Join Date: Sep 2012
Posts: 6
coil-relay-starter Wiring Help

I have a 1989 Jeep wrangler with the 4.2 L engine. I replaced the wiring through out the jeep and I am having an issue with the coil. The coil only lasts about a month before it is toast. I think I have the wiring messed up on the relay that is next to the battery on the firewall. It has 5 connectors. I need someone to tell me how the wires should be run to/from this. It has F, G, I, Sol marked on the terminals.

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Old 09-14-2012, 07:51 PM   #2
90DesertTanYJ's Avatar
Join Date: Jul 2012
Location: JAX, FL
Posts: 635
Replaced as in you used new wires or you used another harness? Why I ask is there is a resistance wire at the coil, not sure exactly what it does but I have seen it on the schematic. It may or may not have anything to do with your coil failures.

On the starter relay you have one threaded post, thats for the battery lead and all the circuits going to the Jeep thru the fuse panel. 3 of the blade terminals are grounds and on my 90 have an OEM connector that does all three, I is going to the ignition switch and Sol goes to the starter solenoid.
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