SECTION 10-H 1957 BUICK SIGNAL SYSTEMS 10-52 1957 BUICK HORNS AND CONTROL CIRCUIT 1957 Buick Horns and Relay Two Delco-Remy electrically operated vibrator type horns are mounted in front of the radiator. Both 1957 Buick horns are operated simultaneously by a horn relay which is controlled by the horn button on steering wheel. The left [...]