Sorry, confusing my posts, deleted the stupid '89 comments.

I am lucky to have a great parts guy who always goes the extra mile, sometimes it takes awhile cause he is very busy, but he never drops the ball.
I shouldn't be so hard on them, it really isn't all their fault, in most cases, in order to look up a part, they have to start with a vin#.
In that case, it gets even harder to try to figure out where various differences may lie.
In the olden days, we used to have BOOKS to look up parts, it was very easy to look at similar components between different vehicles and ascertain if there was a possible unmentioned cross over between pieces.

I would have thought that the differences between Fed and Ca cars would have been more about programming in the ECU rather than actual component differences.

Cruise was an option on all vehicles, so I suspect the wiring for that stuff would be there on all harnesses, regardless.
The major differences, at least on the wiring diagram, seem to be manual vs auto, LE vs DLX

Personally I would rather try adapting a harness from a manual than an auto as it would simplify a couple of things.
Only because if things like the clutch start switch vs neutral safety switch.
Different wire colours and connectors, not to mention their physical locations.
The auto harness will also have all sorts of wires for things like trans oil temp, overdrive and possibly other stuff?

BB