07-09-13, 08:55 PM
Well so much for my theory… totally wrong!
I'm baffled as to exactly how it caused the ignition unit to overheat, perhaps the heavily loaded lighting circuit dragged the supply volts to the coils down. If the unit is clever it might increase the dwell time to compensate, but without a circuit diagram of the innards that's just guesswork.
Anyway, I'm glad you solved it. :thumbup