Relays are usually the first part to go bad in a Corvette's C3 headlight / wiper door vacuum system. Our relays are reproduced to factory
1968 Corvettes used 1 for the wiper door and 1 for the headlights.
1968 - 1972 Corvettes used 1 for the wiper door and 2 for the headlights.
1973 - 1982 Corvettes used 2 for the headlights.
NOTE: Before returning, please be sure to check all areas of the vacuum system. Actuators, hoses, hose connectors, valves
and reservoir tanks.