paul2748 Well-known member Jul 9, 2023 #2 Yes - all 56 gauges operated on a full 12 volts, unlike the 57 and later gauges.
Daves55Sedan Well-known member Jul 9, 2023 #3 1956 was the only year that the King/Sealey guages were designed to receive the full 12-volt input. 1957 and later guages had a regulator ahead of the guage input.
1956 was the only year that the King/Sealey guages were designed to receive the full 12-volt input. 1957 and later guages had a regulator ahead of the guage input.