Standard Ignition DS-495 Headlight Dimmer Switch - Front

Headlight Dimmer Switch for GM Trucks and SUVs

Standard Ignition DS-495 is a 12-volt headlight dimmer switch built for direct replacement in select Chevrolet, GMC, and Oldsmobile applications. It uses a bolt-on attachment method, a single rectangular male connector, and five female blade terminals for a straightforward electrical connection.

Fits 1982-1993 Chevrolet S10, 1985-1989 Chevrolet Astro, and 1991 Chevrolet C1500 applications with the listed steering and wiper configurations. Also fits select GMC S15, Jimmy, Safari, Sonoma, and S15 Jimmy models, plus Oldsmobile Bravada coverage for the specified years.

Key Features

• Standard Ignition DS-495 headlight dimmer switch for 12-volt systems
• Bolt-on mounting for direct service replacement
• 1 rectangular male connector with 5 female blade terminals
• Copper alloy conductors for strong electrical conductivity and reduced resistance
• 100% tested for mechanical and electrical switching performance
• Built with durable materials for service use

Detailed Description

DS-495 is designed for vehicles that use a floor-mounted dimmer switch layout and the listed connector and terminal configuration. Standard Ignition builds this switch with copper alloy conductors to support consistent current flow, while the robust housing and tested switching action help maintain reliable headlight high/low beam control. This part cross-references Standard Ignition S3099 for the same application.

For fitment-based searches, this part is commonly selected for a 1982-1993 Chevrolet S10 headlight dimmer switch replacement, a 1991 Chevrolet C1500 dimmer switch service, or a 1991-1993 GMC Sonoma dimmer switch repair when the vehicle matches the listed equipment notes. It also covers select Chevrolet S10 Blazer, GMC Jimmy, GMC Safari, and Oldsmobile Bravada applications.

What It Helps Fix

• Intermittent or failed high/low beam switching
• Headlights stuck on one beam setting
• Electrical resistance at the dimmer switch circuit
• Worn switch contacts causing inconsistent lighting response
• Loss of headlight beam control in the listed GM applications

Installation Notes and Tips

Verify the vehicle’s steering column and wiper equipment before ordering, since several listed applications require no tilt wheel and no pulse or intermittent wipers. Some fitments also note front position or specific exclusions, such as vehicles with tilt wheel equipment. Confirm the connector shape, terminal count, and 12-volt system match the original switch before installation.

Compatible With: 1982-1993 Chevrolet S10, 1985-1989 Chevrolet Astro, 1991 Chevrolet C1500, 1991 GMC C1500, and select GMC S15/Safari/Jimmy applications as listed. DS-495 is also referenced in searches for Chevrolet S10 Blazer and GMC Sonoma dimmer switch replacement.

Quality Assurance

Standard Ignition states that this switch is fully tested for both mechanical operation and electrical performance. The design uses durable materials and copper alloy conductors to support dependable service in the specified GM vehicle applications.