Originally Posted by intenseblu
anyone have 1987 2.5L starter relay wiring diagram or photo ... i have pictures of mine before i took it all apart but dammit i did not get a good shot.
it has one terminal with a nut for what looks like a heavy duty power supply cable, and then three (if i remember correctly, truck is few miles away) spade connectors).
i searched the forums using google search and found a photo of the CJ version but theirs supplys the starter directly ... looks like ours has power supplied to the solenoid from battery and then a tiny cable that connect to the relay that activates the solenoid.
BTW ... i put most of it back together today ... looks great ... but will potentially smoke due to #2 looking not so hot ... so may be swapping blocks soon as its cheaper than machine work in my area.
I'm gonna tell you this, only because it's gonna benefit you.
The "big" one is the one that gets power directly from the battery. So, yes...."a heavy duty power supply cable."
The two smaller ones....well that's the funny part. One does nothing, the other will let the rig start. Not sure on why they did it that way...but they did. How do I know this.....
My 350 swap I'm doing. I had all the wires connected, had the starter wired up, went to start it...nothing. damnit! It started when I pulled it from the donor, so it should work right???? Well....back to those two smaller studs. One does nothing...the other powers the starters. Soooo, long story short after I pulled the starter out, was about to replace it...I noticed that the threads on the "other" small stud were not corroded, and looked more "fresh." Low and behold, put the starter back in, wired it back together, used the other small stud......boom, started. Look closely at the smaller stud's threads. You should be able to see that one has no rust/dirt/etc in the threads. Thats probably the one you had to pull that little bitty hard to hold/find nut off of.
So, in conclusion. Learn from my craptastiartickery. The big stud gets the big wire. The two smaller studs....try them both, one works, one doesn't. Easy enough.