Well, they were working. The likelihood they both burned out at the same time? Probably not. Everything else works. Does not appear to be loose wiring. Replaced the headlight switch a year ago - interior light switch wasn't working. Headlights worked then. Now they don't. Tested sockets at headlight - no juice. Maybe the headlight switch? Connections all seem good. I'm not great at electrical, but I hate to replace headlights to see if that's the problem, then find it's something else. Thoughts?? BTW '56, 12 volt. Thanks, Dale