Standard Ignition DS-668 Headlight Dimmer Switch

Headlight Dimmer Switch for GM Compact Cars

Restore reliable lighting and steering-column switch control with the Standard Ignition DS-668 headlight dimmer switch. This new combination switch is built for 12-volt systems and is engineered for direct replacement service on select Chevrolet Cavalier and Pontiac Sunfire applications with cruise control.

Standard Ignition DS-668 is a bolt-on switch with a rectangular 3-connector layout, 18 blade/pin terminals, and integrated controls for headlights, turn signals, high-beam flash, and cruise functions. It is a practical replacement for drivers searching for a Chevrolet Cavalier headlight dimmer switch or Pontiac Sunfire combination switch assembly.

Key Features

• Bolt-on attachment method for service replacement
• 3 female rectangular connectors with 3 connector cavities
• 18 terminals with blade and pin terminal types
• Combination switch functions for lighting and signal control
• Includes cruise control cancel, on/off, resume, set, and speed adjustment
• Includes main light operator, latching high beam operator, momentary high beam flasher, and turn signal control
• 12-volt electrical design
• New switch construction

Detailed Description

The DS-668 is designed for vehicles that use a steering-column combination switch to manage multiple driver controls from one assembly. Copper alloy conductors help maintain strong electrical conductivity with low resistive loss, while the switch is 100% tested for mechanical and electrical switching performance. Standard Ignition builds this part for technicians who need a direct-fit replacement that addresses worn or intermittent headlight dimmer and cruise-control switch operation.

Compatible With 1995-2005 Chevrolet Cavalier, w/ Cruise Control; Combo Switch Assembly, and 1995-2001 Pontiac Sunfire, w/ Cruise Control; Combo Switch Assembly. This part cross-references Dorman - HELP 2330811 for the same application. Standard Ignition DS-668 is also referenced in the aftermarket under DS668T and TSS18.

Common Problems This Part Can Help Solve

• Intermittent or failed high-beam switching
• Headlights that do not respond correctly from the column switch
• Turn signal control issues at the steering column
• Cruise control buttons that no longer cancel, set, resume, or switch on/off properly
• Combination switch wear from age, heat, or repeated use

Installation Notes and Tips

Verify connector shape, terminal count, and cruise-control function before installation. This DS-668 uses a bolt-on mounting style and is intended for vehicles with the matching combination-switch configuration. Confirm the vehicle’s original switch layout and compare the connector and terminal design to the removed part before final assembly.

Quality Assurance

Standard Ignition uses robust materials and copper alloy conductors in this switch, and each unit is tested for both electrical and mechanical operation before release. That focus on service-grade construction supports dependable replacement performance in Chevrolet Cavalier and Pontiac Sunfire applications.