i have fitted an alpha one out-drive to a 4.3 volvo penta engine.. after after some head scratching and help from you guys on here I'm about finished, I'm fitting the interrupt switch, i know the theory about how it works, what i need clarifying is the wiring. .. do i break the gray wire from coil to distributor with the interrupt switch. it seems in theory that this will work, just want reassuring or if there's another way to do it.. thanks guys. hope to get this baby in the water at the weekend.