[MOTORHEAD]

Paul:
I put 2 Igniter II kits and coils on my boat a couple of years ago. Both failed 1st time out! I'am pretty sure the instructions said to remove or bypass ballast or resistance wire to get full (12-14 vdc) to the module. I had no ballast resistor , but did have resistance wire feeding the coil. Thought I had bypassed it, but had not. Low voltage (9vdc)to module = increased current draw = burned out pwr xster ! Slow trip home on one engine!
Decided it wasn't worth the risk (on a boat offshore) to rely on delicate solid state devices to drive primary motive power. Went back to points & condensor.
Shouldn't be a problem for automotive use, just make sure you read and understand the directions.
Ted