Restore correct headlamp operation with this 1968–1973 Corvette C3 Dash Headlight Switch with 2-Port Vacuum Valve. This OE-style switch is a factory-accurate replacement for GM part number 1995166—combining both electrical and vacuum control functions in one unit. Designed to fit and function exactly like the original, this headlight switch mounts into your dash panel, connects into the dash harness, and integrates fully with your headlight door vacuum system.
Whether you're chasing a dead circuit or headlights that won’t open, this switch solves both problems with proper factory function. It includes a correct porcelain insulator for the dimmer resistor, 8-wire prong configuration, and a modern internal circuit breaker that handles both original incandescent and higher-amperage halogen bulbs. The integrated vacuum valve operates your headlamp doors smoothly—just like they did from the factory.
Features • Reproduction of GM part number 1995166 • Fits all 1968–1973 Corvette C3 models • Includes 2-port vacuum valve for headlamp door operation • Correct porcelain heat insulator for dimmer resistor • Upgraded internal circuit breaker supports halogen bulbs • 8-wire prong connector design—dash harness ready • Accepts OE-style push/pull headlight knob and rod • Dash dimmer function and vacuum ports integrated • Direct fit—no modifications required
Tech Notes • Headlight knob/rod not included • To remove knob: press release button on top of switch • Electrical and vacuum functions are fully integrated
Because Details Matter This isn’t just a light switch—it’s a mission-critical restoration piece that keeps your C3 driving safely and looking stock. Combining electrical precision with vacuum system accuracy, this switch helps your headlights rise, shine, and retract with factory-original confidence.
Item ID:
606-228