Standard Ignition DS-935 Headlight Dimmer Switch - Front

Headlight Dimmer Switch for GM Trucks and SUVs

Standard Ignition DS-935 is a combination switch built for vehicles that need dependable lighting, wiper, and turn-signal control from the steering column. It uses copper alloy conductors, a bolt-on attachment method, and a 12-volt electrical design to support consistent switching performance in daily service.

Compatible With 1998-2005 Chevrolet Blazer, 1998-2005 GMC Jimmy, 1998-2004 GMC Sonoma, 1998-2001 Oldsmobile Bravada, 1999-2004 Chevrolet S10, and 1999-2000 Isuzu Hombre applications listed below, this DS-935 headlight dimmer switch is a direct-fit service part for vehicles without cruise control in the specified configurations.

Key Features

• Standard Ignition DS-935 headlight dimmer switch
• Combination switch function for lighting, turn signal, washer, and wiper control
• Bolt-on attachment method with rectangular 4-pin connector design
• Male connector with female blade terminals
• Includes latching high beam operation and momentary high beam flash
• Turn signal control, windshield washer spray, and windshield wiper delay/speed settings included
• Displayed indicator markings for easier driver operation
• New part built with copper alloy conductors for low-resistance electrical flow

Detailed Description

Standard Ignition DS-935 is engineered as a replacement combination switch for GM compact trucks and SUVs that use a column-mounted control assembly. It is designed to manage headlight dimming along with turn signal and windshield wiper functions, making it a practical service solution when the original switch shows wear, intermittent operation, or electrical inconsistency. This part cross-references Dorman - HELP 2330825 for the same application.

Use DS-935 when servicing 1998-2005 Chevrolet Blazer, 1999-2004 GMC Jimmy, 1998-2004 GMC Sonoma, 1999-2004 Chevrolet S10, 1998-2001 Oldsmobile Bravada, and 1999-2000 Isuzu Hombre vehicles in the listed non-cruise-control configurations. The part number DS-935 is also a useful reference when verifying the correct replacement during diagnosis or catalog lookup.

What It Helps Fix

• Headlights that will not switch between low and high beam
• Intermittent or inoperative turn signal operation
• Wiper delay or wiper speed control problems
• Washer spray control issues from the steering column switch
• Worn or unreliable combination switch electrical contacts

Installation Notes and Tips

Verify the vehicle is listed in the fitment data before ordering, especially because this switch is not for cruise-control-equipped applications where noted. Confirm the connector style, terminal count, and steering-column configuration match the original part before installation. The bolt-on design supports direct replacement, and the rectangular 4-cavity connector layout should be checked against the existing harness before final assembly.

• Fits 1999-2005 Chevrolet Blazer, front; not compatible with vehicles equipped with cruise control.
• Fits 1998-2005 Chevrolet Blazer, N/A; not compatible with vehicles equipped with cruise control.
• Fits 2005 GMC Jimmy, front; not compatible with vehicles equipped with cruise control.
• Fits 1999-2003 GMC Jimmy, front; not compatible with vehicles equipped with cruise control.
• Fits 1999-2004 Chevrolet S10, N/A; not compatible with vehicles equipped with cruise control.
• Fits 1999-2004 GMC Jimmy, N/A; not compatible with vehicles equipped with cruise control.
• Fits 1999-2004 GMC Sonoma, N/A; not compatible with vehicles equipped with cruise control.
• Fits 1998-2004 GMC Sonoma, N/A; w/o Cruise Control; Combo Switch Assembly.
• Fits 1999-2001 Oldsmobile Bravada, front; not compatible with vehicles equipped with cruise control.
• Fits 1998-2001 Oldsmobile Bravada, N/A; not compatible with vehicles equipped with cruise control.
• Fits 1999-2000 Isuzu Hombre, N/A; not compatible with vehicles equipped with cruise control.
• Fits 1998 Chevrolet S10, N/A; w/o Cruise Control; w/ Extended Build.
• Fits 1998 GMC Jimmy, N/A; w/o Cruise Control; w/ Extended Build.
• Fits 1998 GMC Jimmy, N/A; w/o Cruise Control; w/ Tilt Steering Wheel; w/ Extended Build.
• Fits 1998 GMC Sonoma, N/A; w/ Tilt Steering Wheel; w/ Extended Build; w/ Cruise Control.
• Fits 1998 GMC Sonoma, N/A; w/o Cruise Control; w/ Extended Build.
• Fits 1998 Isuzu Hombre, N/A; w/o Cruise Control; w/ Extended Build.
• Fits 1998 Oldsmobile Bravada, N/A; w/o Cruise Control; w/ Extended Build.

Quality Assurance

Standard Ignition builds this switch with robust materials and copper alloy conductors, then tests each unit for mechanical and electrical switching performance. The design reflects long-term development focused on technician requirements and service reliability.