HEY GUYS MAYBE YOU CAN ANSWER THIS QUESTION FOR ME.I HAVE A MSD POWER COIL AND I AM TRYING TO HOOK UP MY STEWART WARNER 5" TACH THAT I PURCHASED.I OBVIOUSLY NEEDED TO PURCHASE A 9117 AUTOMETER TACH ADAPTER AND DID.MY QUESTION IS,CAN I HOOK UP THESE PARTS TO MY MSD COIL.ALL FACTORY INSTRUCTIONS TELL ME NO,BUT I CAN NOT GET A HOLD OF ANYONE AT CUSTOMER SERVICE!

 

Yes you hook up your tach driver to the center wire going to the coil

 

YES,THAT SAID.MY INSTRUCTIONS READ.CAUTION!!! THE TACH ADAPTER CANNOT BE USED WITH A CAPACTIVE DISCHARGE IGNITION(SUCH AS AN MSD IGNITION CONTROL).THE VOLTAGE ON THE COIL POSITIVE MUST BE BELOW 18 VOLTS.NOT TO SOUND LIKE AN IDIOT AGAIN BUT WILL IT WORK?ESPECIALLY WITHOUT FRYING ANYTHING?

 

I've been using mine for well over a year and have had no problems. The only differents is , I'm using the msd tach driver