Standard Ignition Turn Signal Switch P/N:TW-19
Replace a worn or failed turn signal switch in your classic Chevrolet or GMC with the Standard Ignition Turn Signal Switch TW-45. This C10 switch sends power to the left or right turn signal lamps as you move the signal lever. It installs as a direct-fit replacement for the listed applications, including the 1973-1974 Chevrolet C10 Pickup, 1973-1983 Chevrolet C10 Suburban, 1973-1983 GMC Jimmy, 1975-1983 Chevrolet C10, 1975-1983 Chevrolet K5 Blazer and 1979-1983 GMC K1500.
Signs this switch may need replacing include turn signals that work only intermittently or in only one direction, or signals that won't stay on or cancel properly. A burned-out bulb, a failed flasher or a wiring fault can cause similar symptoms, so diagnose the circuit before replacing the switch.
The TW-45 also covers the 1982-1983 Chevrolet S10, the 1983 Chevrolet S10 Blazer, the 1982-1983 GMC S15 and the 1983 GMC S15 Jimmy. It fits Chevrolet C20, C30, K10, K20, K30, G10, G20 and G30 models, along with GMC C/K and G applications. See the Buyer's Guide tab for the full list of 59 applications, including engine details.
Interchange: S3304 · SW1075 · DL6505 · 1997985
This part cross-references / interchanges with the following part numbers:
What vehicles does the Standard TW-45 turn signal switch fit?
It fits 59 listed Chevrolet and GMC applications, including the 1975-1983 Chevrolet C10, the 1973-1983 GMC Jimmy and the 1983 Chevrolet S10 Blazer. See the Buyer's Guide tab for the full list.
What does a turn signal switch do?
It routes power to the left or right turn signal lamps when you move the signal lever up or down.
How can I tell if my turn signal switch is failing?
Signals that work intermittently, work in only one direction, or don't cancel properly may point to the switch. Check the bulbs, flasher and wiring first, since they can cause similar symptoms.
Is the TW-45 tested before it ships?
Yes. Standard tests 100% of these parts to verify both mechanical and electrical switching performance.
What part numbers does the TW-45 interchange with?
The TW-45 interchanges with S3304, SW1075, DL6505 and 1997985.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.