Shawn
Sorry to hear about your ongoing problem.
Wish I could help you more but, as I'm too new to my M-B, including the S/C system, I'm stumped.
Logic tells me, with the S/C having an electro-magnetic clutch, the signal for it to engage would be largely a load-sensing signal, throttle position signal ( and possibly an rpm trigger as well ).
Just in case you need it :
www.canadiansupercharger.com 