NDDan
Guest
Maybe the quickest in field check is short the wires together at the senders in tank. left one is last one in circuit so short that one first. Then go to right one if light didn't go out. Wires will be or need to see ground to get light out. Unplugging wires will keep light on. See what you find out hear and I think you'll find one of the flipper switches has gave it up. Good luck