red58, U are partially correct with the horns. The controlling input is eye contact. Don't make eye contact, and you MAY have the right of way. Right of way is a very fuzzy line. If someone doesn't respect YOUR idea of right of way, then the big horn, and mine will truly make them jump. I can't wait.
I think you're right on the heater switch, as there wasn't anything else that could regulate the fan. Although, there was no ranco valve (gotta get that sorted), and the hot water line had a rotary shutoff type valve in line. I'm rebuilding the heater now. Don't know why, as I am thinking about getting AC in the beast. But, hate to have rusty things laying around.
Strange that someone put signal sockets/bulbs in, with no controls. And, I never found a flasher unit.
Steven
