Thanks for the response, Bill. I thought that the relay nearest the firewall might be the starter relay, but wasn't sure. As you may know, I have had an ongoing issue with my 1977 B not starting on occassion. I thought it was the ignition switch, then thought it might be the starter. The car wouldn't start and I was getting ready to check out the starter and opened the hood (engine cover) to look at things. I just happened to notice that the starter relay was loose with its mounting screw backed out about halfway. I tightened up the screw, reset all the connections, and the car started right up. Think I may have found the problem.
zach