Thanks, catsasswiring. I never doubted your credentials... I could tell you know your stuff. As for voltage spikes killing MSD box... how are you saying this will be prevented? Separate control and load systems.... does this mean run everything with relays? I understand the benefit but I don't understand where the voltage spike risk is from and how specifically to prevent it. I have not installed MSD (...yet.... I do have all the parts) The only precaution I was aware of was to install the diode in the exciter wire to the alt.... what am I missing? I certainly don't want to fry this new toy.

Also, it sounds to me the HP gain cutting alternator while running is not worth the hassle?

Many thanks,

Chris