[Formulas]

on cars that originally had points they also had a wire providing full batt voltage from starter solenoid during cranking, that's what did my unilite in during a compression test

you have to read and verify what the installation instructions are telling you and or eluding to like they will tell you voltage must not exceed a certain value its up to you to identify and eliminate any extra voltage

and some units spec out a primary coil resistance value which i suspect is a check on the load the ignition module sees, a aftermarket mexico or china coil can be slightly out of spec or not built for the sparkulator in question leading to the failure

it would be easy for me to claim mallory unilite is junk, my installation was junk