How can you tell if the lighting coil has gone bad??

You will have no lights, tach, etc or they will work minimally and/or erractically. Use a VOM to check the continuity of the leads coming off the coil. A dead coil will likely register either very high/shorted or open.

Your engine should run fine in spite of a bad lighting coil They are completely separate systems.

You will have no lights, tach, etc or they will work minimally and/or erractically. Use a VOM to check the continuity of the leads coming off the coil. A dead coil will likely register either very high/shorted or open.

Your engine should run fine in spite of a bad lighting coil They are completely separate systems.[/b]

Thanks

But if I don't have enough volts going to the kill switch this would stop the CDI right?

I don't know what voltage one might find on the kill switch. The on/off switches simply ground the engine's electrical system and get no power at all from the lighting coil. The two coils are located adjacent to each other- under the flywheel, but they are completely separate systems.