I have the Ultrastart 4500M.
It has a configurable 2nd starter/ignition/accessory line. If in second starter mode, it should only output during crank correct?
The neutral sense wire in the WRX is definately +, shows 12V when tested against ground.
I think someone with an older RS had a neutral sense with ground.
It makes sense to configure the clutch bypass with the neutral sense wire and the alarm 2nd starter output, doesn't it?
I just don't like using 2 relays.
Pretty soon one's car is full of relays.
Click, kerchunk, click, clack, ticka ticka, tock, click, whee.