[Barry in St.Paul]

UPDATE: I connected a bulb across the fuse clamps, and finally found what I think is the culprit. The third (empty) post inside the headlight socket on one side is just a bit too close to the two headlight posts and when I wiggle the socket, the test bulb would flicker on and off. SO, going to get a Dremel and simply remove the brass socket from inside the headlight and push it out. Serves no purpose for a 30 coupe with cowl lights, and problem solved!