Virg The switch applies positive battery power to the starter in the start mode, while also grounding the non-retard mag, for easier starting. The L and R ground that mag so when selecting L the Left mag is grounded testing the operation of the right mag, while R is grounding the right mag and testing the operation of the left mag. When selecting Both neither mag is grounded which allows normal operation.
This is why Mark J cannot get it to work correctly. It will not apply positive power nor will it provide ground when selecting both, making it only good for guys running just mags. Mark J, why do you want to run BOTH coils at the same time? This cannot be good for the MSD coil switcher?! Colin Rainey First National Mortgage Sources Lending Solutions in All 50 States brokerpilot9...@earthlink.net
