Back again,
MS2 will run the stepper motor, Need to change the wireing to the stepper since the commons need to be grounded rather than supply for the MS driver operation.
MS1 extra will run a Ford or Bosch idle valve. I machined a block to mount a Ford idle valve onto the Mitsu throttle body. Works fine.

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.