Wiring Harness Question I'm going to look for wiring harnesses for my '92 4x4 pickup (22re manual) in a nearby city at salvage yards. My understanding is that only the late 1991 and 1992 trucks will have that same ECM, thus the same harness, I assume. If I find harnesses that have already been pulled, if the plugs match up with the ECM, does that necessarily mean I have the right harness? Is there any other way to know for sure I am getting the correct harness for my ECM(89661-35630) at a salvage yard?
Thanks!

 

I am not as comfortable with the 89-94, but above the steering column, under the dash, the part number for your truck has a label on it. I have seen on the 84-88s the part number will change with what options that come on the truck.

I believe the 91 was a mechanical speedometer and the 92 is a electrical driven speedometer so that raises a red flag to me.

I copied it from a build I did but the tag is going to be in the area of the speedometer cable in the pics below. Several different part numbers that you might find, it will just depend if you do or don't want some options.

Copied...
I think this is the PN#82131-89830. The "8" isnt showing on the first part.