Standard Ignition TW-91 Turn Signal Switch

Turn Signal Switch for Select GM Applications

Standard Ignition TW-91 is a new turn signal switch built for direct electrical switching performance in select Buick, Cadillac, and Oldsmobile applications. It uses copper alloy conductors for strong conductivity and low resistive loss, with 100% testing to verify mechanical and electrical operation.

Key Features

• New turn signal switch from Standard Ignition
• Male connector gender with 1 connector cavity
• 13 female blade terminals
• Copper alloy conductors for efficient current flow
• 100% tested for mechanical and electrical switching performance
• Fits 1991-1992 Buick Century, w/o Pushbutton
• Fits 1989 Cadillac DeVille
• Fits 1989 Cadillac Fleetwood
• Fits 1989 Oldsmobile 98, w/ Electronic Push Button Control

Detailed Description

TW-91 is a Standard Ignition turn signal switch engineered for service replacement in vehicles that require dependable signal and control switching. The robust construction and tested electrical performance support consistent operation in the steering column switch circuit, while the blade-terminal design helps maintain secure electrical contact. This part cross-references S3308 and SW806 for the same application. If you are sourcing a turn signal switch for a 1991-1992 Buick Century, 1989 Cadillac DeVille, 1989 Cadillac Fleetwood, or 1989 Oldsmobile 98, TW-91 matches the listed fitment and connector configuration.

Common Problems This Part Can Address

• Turn signals that do not activate or cancel correctly
• Intermittent signal operation caused by worn internal contacts
• Electrical switching faults in the steering column control circuit
• Loss of signal function on select Buick Century, Cadillac DeVille, Cadillac Fleetwood, or Oldsmobile 98 applications
• Poor terminal contact from a damaged or fatigued switch assembly

Installation Notes and Tips

Verify connector style, terminal count, and vehicle-specific fitment before installation. TW-91 uses a male connector with 13 female blade terminals, so matching the original switch layout is important for proper operation. Confirm whether your vehicle is equipped with pushbutton or electronic push button control, since the listed applications include configuration-specific notes.

Quality Assurance

Standard Ignition builds this switch with high-grade materials and validates each unit through mechanical and electrical testing. The copper alloy conductor design supports stable conductivity for service-focused repairs.