Turn Signal Switch for 1967-1968 Chevrolet Impala & More - Standard Ignition TW-40

If a worn turn signal switch is leaving your classic GM or AMC with signals that won't flash or won't cancel, the Standard Ignition switch TW-40 is built to replace it. It fits many vehicles, among them the 1967-1968 Chevrolet Impala, 1967-1968 Chevrolet Camaro and 1989 Chevrolet P20. See the "Vehicles it fits" section for the full list and engine details.

This part is listed under two names, Turn Signal Switch and Headlight Dimmer Switch.

• Copper alloy conductors: designed for strong electrical conductivity with low resistive losses.
• 100% tested: each part is checked to verify both mechanical and electrical switching performance.
• Quality control throughout: as a global maker of original equipment ignition products, Standard Ignition maintains complete quality control across the manufacturing process, from componentry to the finished product.
• Built for the service bay: a robust design and high-grade materials, backed by decades of research and development focused on what technicians need.

The turn signal switch controls power to the turn signal lamps when the signal lever is moved. Signs it may need replacing include signals that don't flash, work on only one side, work intermittently, or fail to cancel. Bulbs, the flasher and wiring can cause the same symptoms, so diagnose the circuit before replacing the switch.

Interchange: S3245 · SW351 · DL6187 · 1893592 · 1997986 · 7800482