Standard Ignition DS-720 Headlight Dimmer Switch

Headlight Dimmer Switch for Buick Century and Regal

Standard Ignition DS-720 is a new headlight dimmer switch built for direct replacement service on select Buick Century and Buick Regal applications. It combines turn signal control, windshield washer spray, windshield wiper delay, and windshield wiper speed functions in one combo switch layout for vehicles without cruise control.

Key Features

• Direct-fit bolt-on design with a rectangular 3-cavity male connector
• Black and white plastic finish with displayed indicator markings
• Includes latching high beam operator, momentary high beam flasher, and turn signal control
• Windshield washer spray, wiper delay, and wiper speed functions included
• 12-volt electrical design with 26 blade terminals and female terminal interface
• New replacement part engineered and 100% tested for mechanical and electrical switching performance
• Copper alloy conductors for strong electrical conductivity and reduced resistive loss

Detailed Description

Standard Ignition DS-720 is a headlight dimmer switch and combination switch assembly for 1997-2005 Buick Century and 1997-2004 Buick Regal applications listed below. It is specified for vehicles without cruise control and is used where the factory switch integrates high beam control, turn signal operation, windshield washer spray, and wiper delay/speed functions. This part number, DS-720, is a practical OE-style replacement for drivers servicing a Buick Century or Buick Regal with the matching non-cruise-control configuration.

This part cross-references Standard Motor Products DS-720 for the same application.

What This Part Helps Address

• Inoperative or intermittent high beam switching
• Turn signal control problems at the steering column switch
• Windshield wiper delay or speed selection issues
• Washer spray activation faults from the combination switch
• Wear-related electrical contact loss in the original switch assembly

Installation Notes and Fitment

• Fits 1997-2005 Buick Century, N/A; not compatible with vehicles equipped with cruise control.
• Fits 2004-2005 Buick Century, N/A; w/o Cruise Control; Combo Switch.
• Fits 1997-2004 Buick Regal, N/A; not compatible with vehicles equipped with cruise control.
• Fits 2004 Buick Regal, N/A; w/o Cruise Control; Combo Switch.
• Fits 1997-2003 Buick Century, N/A; w/o Cruise Control; Combo Switch Assembly.
• Fits 1997-2003 Buick Regal, N/A; w/o Cruise Control; Combo Switch Assembly.

Verify the vehicle’s steering column switch configuration before installation, especially cruise control equipment and connector style. The bolt-on mounting and 3-cavity connector layout should be matched to the original unit before replacement. DS-720 is intended for Buick Century and Buick Regal models listed above.

Quality Assurance

Standard Ignition builds this switch with robust materials and copper alloy conductors, then tests each unit for both mechanical action and electrical switching performance. That validation helps ensure consistent operation in daily service use.