[Slammed84]

Two wires right? Should be simple to just unplug the harness and set a meter for continuity. Hold the leads on the spades and slowly push that plunger in til it beeps.
This is definitely on my list of stuff to do for my truck. I had gotten do used to manually downshifting though, it will be weird if it actually shifts correctly.
I stole my 400 out of a C20 longbed, not sure the year. Had no idea about the electric kickdown so didn't take it with the trans.
But I like the B&M style throttle setup for them, have you seen those?