Quote
like how do you hook up 4 wires to a 6-pin IAC motor?


The Mitsubishi applied 12v to the center wires but the GM system MS is designed after these go to ground. So you will want to ground the centers and the MS signal goes to the ends.
I have not done this yet so time needs to be spent to get the pairing correct.

Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.