Standard Ignition SLS-40 Brake Light Switch

Brake Light Switch for Classic GM Applications

The Standard Ignition SLS-40 brake light switch is built for dependable stoplamp operation in classic Chevrolet, Cadillac, and Oldsmobile applications. It uses a metal housing with a female connector, male bullet terminals, and a two-terminal switch layout for direct electrical control.

Key Features

• Brake light switch for stoplamp circuit operation
• Metal color finish with metal and plastic construction
• Female connector with 1 connector interface
• 2 male bullet terminals for electrical connection
• Copper alloy conductors for strong electrical conductivity
• Spring and contact design helps reduce arcing for longer service life
• 100% tested for mechanical and electrical switching performance

Detailed Description

Standard Ignition SLS-40 is a brake light switch engineered for service on older GM vehicles where reliable stoplight activation is critical. It is a direct-fit style switch for applications including 1950 Chevrolet Bel Air, 1951-1955 Cadillac Commercial Chassis, 1953-1955 Cadillac DeVille, 1953-1955 Cadillac Eldorado, 1952-1956 Oldsmobile 98, 1954-1957 Oldsmobile 88, and 1957 Oldsmobile Starfire. The SLS-40 part number is also referenced in interchange listings for related stoplight switch applications.

Built with brass or high-impact composite housing materials as specified by the manufacturer, this switch is designed to maintain consistent electrical performance under regular service conditions. The internal contact arrangement is intended to limit arcing, while copper alloy conductors support low-resistance current flow for the brake lamp circuit.

Common Issues This Part May Address

• Brake lights that do not illuminate when the pedal is pressed
• Intermittent stoplamp operation caused by worn switch contacts
• Delayed or inconsistent brake light response
• Electrical resistance in the stoplight circuit
• Failure of the original brake light switch on classic GM vehicles

Installation Notes and Tips

Verify connector style, terminal type, and vehicle application before installation. The SLS-40 uses a female connector with two male bullet terminals, so matching the existing harness connection is important for proper fitment. Confirm the brake light circuit is functioning correctly after installation and test pedal operation before returning the vehicle to service. Fits 1950 Chevrolet Bel Air, 1951-1955 Cadillac Commercial Chassis, 1953-1955 Cadillac DeVille, 1953-1955 Cadillac Eldorado, 1952-1956 Oldsmobile 98, 1954-1957 Oldsmobile 88, and 1957 Oldsmobile Starfire.

Quality Assurance

Standard Ignition manufactures original equipment ignition and electrical products with quality control maintained throughout the production process, from component selection to finished part. Each SLS-40 brake light switch is tested to verify mechanical and electrical switching performance before release.