Mallory unilite electronic ignitin distributor and msd flamethrower coil. Noticed today while messing with electrical stuff my coil gets super hot while sitting with the key on. Is there anything to stop this from happening? Or should I just remove the hot wire from the coil if I'm keeping the key on for a while? Ballast resistor? Finishing wiring of the car and testing things, otherwise I wouldn't have ot sitting long periods of time with key on.