Yes, its a 4 pin ECU with single ballast resistor. The bulkhead connector is out of the picture as I direct wired a 10 gauge straight from battery to Alt. I totally have the amp guage bypassed and Im running a volt guage now. I ran this electronic ignition conversion all last year with NO problems at all. All of a sudden, this happens. At least Ive pinpointed to the run circuit. Its prob. a wire thats going bad. I will test as you said above and let you know what happens.

Fish