Corvette Switch Vacuum 68-72 Wiper Door 68-82 Headlamp Over Ride
1968-1972 Corvette Windshield Wiper Door Control Switch

1968-1982 C3 Corvette Headlamp / Headlight Control Valve

Located Under Steering Column, Pull Down To Open Headlight Doors

GM Part Number: 5638317

This Switch Is Used To Override The Vacuum Valve So You Can Service Or Change Your Headlight Bulbs, Windshield Wiper Arms Or Blades.