Checked all the relays and swapped them with the new one to test. They are all in working order as far as I can tell.
After an hour of poking around I have no idea where to look for this 60 pin harness. I've check on both sides of the firewall. Didn't even see anything capable of 60 pins. Biggest one I saw could maybe take ten.

Why would I spend $440? Because I don't have any experience whatsoever fixing cars. I think the most expensive part was the labor from the mechanic. I was expecting it to cost $800.

Key cylinder is not sloppy.

I haven't performed the "Wiggle Test". Haven't ever heard of it.

I have checked and cleaned several of the grounds but I don't know which ones to check or if I should every single one.

__________________
'86 Ford Ranger FI 2.9L 4x4 5-speed LE

95 Yamaha xt225