Hello all,

When a coil fails, does it die immediately? Or does it show 'symptoms' for a while? I am still trying to fine the source of my electrical gremlin (1980 R100 point system; two coil). I have a very sporadic issue where, at highway speed, the GEN light suddenly comes on brightly; the tach goes crazy and the engine begins to run very roughly...Then the light goes off and everything is fine.6

I have cleaned connections, found no damaged wiring, put on a new condenser and voltage regulator. It doesn't seem to be a charging issue...more like I lose energy to the ignition system,..and it is so unpredictable. Sometimes after a few minutes riding..other times after hours...or not at all?

I am flummoxed....