Standard Ignition DS-975 Headlight Dimmer Switch

Headlight Dimmer Switch for Mitsubishi and Dodge

Standard Ignition DS-975 is a new combination switch for vehicles equipped with a 12-volt electrical system and a single rectangular female connector. It combines headlight dimmer, turn signal, windshield wiper, and washer functions in one bolt-on assembly for direct replacement service.

Compatible with 1987-1993 Dodge Ram 50 and 1990-1994 Mitsubishi Mighty Max applications, this DS-975 headlight dimmer switch is built for vehicles with the listed multifunction control setup. The Standard Ignition DS-975 part number is also referenced by interchange numbers used for the same application.

• Bolt-on attachment method
• Female rectangular connector with 1 connector cavity
• 15 blade terminals
• Combination switch functions
• Turn signal control included
• Main light operator included
• Latching high beam operator included
• Momentary high beam flasher included
• Windshield washer spray included
• Windshield wiper delay setting included
• Windshield wiper speed setting included
• 15 wiper delay settings and 3 wiper speed settings
• 12-volt electrical design

Function and Fitment Details

This Standard Ignition DS-975 headlight dimmer switch is a multifunction steering column switch assembly that controls exterior lighting and wiper operations from one location. It is listed for 1987-1993 Dodge Ram 50 with intermittent wipers and dual lever multifunction switch assembly, as well as 1990-1994 Mitsubishi Mighty Max models with tachometer notes and no-cruise-control configurations where specified.

This part cross-references B571633 and DL6325 for the same application.

Common Problems This Part Can Address

• Inoperative or intermittent high beam switching
• Turn signal control failure at the steering column
• Windshield wiper delay or speed selection issues
• Washer spray switch malfunction
• Headlight control problems within the multifunction switch assembly

Installation Notes and Tips

Verify connector shape, terminal count, and vehicle equipment before installation. This DS-975 uses a bolt-on mounting style and a single female rectangular connector, so matching the original switch layout is important for proper fitment on Dodge Ram 50 and Mitsubishi Mighty Max applications. Confirm whether the vehicle is equipped with cruise control, since the listed fitment notes exclude cruise-control configurations on some applications.

Quality Assurance

Standard Ignition supplies this DS-975 as a new replacement part for the listed vehicle applications. Review the fitment notes carefully against the original switch configuration to confirm correct application before installation.