Standard Ignition SLS-274 Brake Light Switch

Brake Light Switch for Pontiac Applications

Standard Ignition SLS-274 is a brake light switch built for dependable stoplamp signal control in classic Pontiac applications. It uses a durable housing, low-resistance copper alloy conductors, and a contact design that helps reduce arcing for consistent electrical performance.

Key Features

• Brake light switch for stoplamp circuit operation
• Black and gray color finish with male connector and male terminals
• 1 connector with 2 bullet terminals
• Cast iron and plastic finish materials
• Brass or high-impact composite housing design, depending on application specification
• Special spring and contact arrangement to reduce arcing
• Copper alloy conductors for strong electrical conductivity
• 100% tested for mechanical and electrical switching performance

Detailed Description

Standard Ignition SLS-274 is engineered as a direct brake light switch solution for 1955-1957 Pontiac Catalina and 1957 Pontiac Bonneville applications. It is designed to deliver reliable switch action for the stoplight circuit, helping maintain proper brake lamp response in vehicles that depend on accurate pedal-actuated electrical signaling. This part number, SLS-274, is built with service-focused materials and tested to verify switching performance before it leaves the factory. This part cross-references DENSO Auto Parts 221-3115 for the same application.

Common Issues It Can Help Solve

• Brake lamps that do not illuminate when the pedal is pressed
• Intermittent stoplight operation
• Delayed or inconsistent brake light activation
• Electrical switching problems at the pedal switch
• Wear-related contact issues in the stoplamp circuit

Installation Notes and Tips

Verify connector style, terminal type, and mounting configuration before installation. Confirm the brake light switch adjustment so the pedal activates the switch at the correct point in travel. Inspect the wiring terminals and connector for corrosion or looseness before connecting the new SLS-274. For 1955-1957 Pontiac Catalina and 1957 Pontiac Bonneville vehicles, compare the original switch layout to ensure proper fitment and electrical connection.

Quality Assurance

Standard Ignition manufactures this brake light switch with controlled quality processes from component selection through final testing. The switch is 100% tested for mechanical and electrical function, and the design uses materials selected for durability and conductivity in service applications.