...that comes from the "performance shift" button go to on the pcm? I've looked in almost every conceivable spot in the electrical FSMfor it, and there is no mention of it at all.

EDIT: Guess I should mention it'* for the '93. That would help things along wouldn't it?

Power for the backlighting comes from the dash dimmer circuit.
Power for the two LED'* comes from fuse 17 (brown wire)
When in Performance (or SPORT mode) it inserts a 348 ohm resistor as a high-resistance path to ground allowing a low voltage apply to Pin B11 of the PCM C2, white/black wire.

My FSM shows that as circuit 451, with "diagnostic request" as its descrip. That'* a far cry from anything trans related (smartasstic remark directed to the FSM).

Gonna look up this circuit 451 if possible and see if it contains the perf switch.

Edit: It doesn't. Just the ALDL and nothing else. Somethin' is amiss here.

EDIT #2 - Found it....just happened to be thumbing through the FSM and came across the circuit. Interesting. My project has a separate input for that circuit.

8A 39-0

Yup

Thanks for helping me just the same