coil fire??
Re--read my post above.
Check that the coil NEG is hooked to the distributor. This is an EXTREMELY simple circuit
Battery -- igntion switch -- ballast resistor -- coil POS -- through coil -- coil NEG -- to distributor --through points -- to ground.
Points open and close and break current flow. You can NOT have current breaking through points and NOT have coil NEG pulsating on / off unless coil is hooked reversed.