73 electronic ignition help

Keep in mind people talk about "wiring" but in reality the trouble is almost always connectors, terminals, and switches, and sometimes fuses and fuse clips. There are no fuses in this part of the circuit

ANOTHER POINT that comes to mind, Redfish on here has pointed this out..........the late model cars have an engine harness connector, look for a WHITE colored connector.......they often give trouble. Best advice is to cut it out and splice the wiring direct