turn key on find the with white wire touch to ground . it will spark thru the coil if the box is good from the coil wire . have it by some thing grounded and you should have a spark you need 12 volts thru the big red wire and you need 12 volts switch. i do not think you will see any spark you need to make the box discharge the box and the with white wire will do this it is a breaker wire if no spark it could be the dist .the hook up on the dist need to be un hook to do this. i think this is right but check with msd i have had good luck with msd stuff. they make very fine stuff