Picked up a 1985 Sea Sprite with a OMC 3.8 engine that has a Petronix converted electronic ignition. I have 8.5 volts to coil with key on and a weaker battery. During cranking the voltage at coil drops to zero volts. Also a purple wire and a red wire with a white tracer are hanging below the shifter. The purple wire has 10.5 volts key on and 12.5 key off. No voltage either way on red wire and not a good ground.
any help appreciated.
any help appreciated.