Standard Ignition DS-1225 Headlight Dimmer Switch

Headlight Dimmer Switch for Mitsubishi and Dodge

The Standard Ignition DS-1225 is a new combination switch for vehicles that use a single multifunction control on the steering column. It combines headlight dimmer, turn signal, windshield washer spray, and windshield wiper speed functions in one direct replacement unit. This DS-1225 headlight dimmer switch is built for 12-volt applications and uses a bolt-on attachment with a female rectangular connector.

• New replacement combination switch
• Headlight dimmer control with latching high beam and momentary flash-to-pass
• Main light operator included
• Turn signal and directional indicator control included
• Windshield washer spray included
• Windshield wiper speed setting included
• Displayed indicator markings included
• 12-volt electrical design
• 1 female rectangular connector with 2 cavities
• 14 blade terminals

Detailed Product Overview

Standard Ignition DS-1225 is a headlight dimmer switch and multifunction combination switch for select Mitsubishi Mighty Max and Dodge Ram 50 trucks. It is listed for 1995-1996 Mitsubishi Mighty Max, 1990-1994 Mitsubishi Mighty Max without tachometer and without cruise control, 1990-1994 Mitsubishi Mighty Max without tachometer, 1987-1993 Dodge Ram 50 without intermittent wipers and with dual lever multifunction switch assembly, and 1987 Dodge Ram 50 with intermittent wipers feature not included. The DS-1225 supports the primary lighting and wiper controls commonly routed through the steering column switch assembly.

This part cross-references Standard Ignition DS-1225 and Rostra Powertrain Controls 64-0471 for the same application.

Common Replacement Symptoms

• Headlights do not switch cleanly between low beam and high beam
• High beam flash function is intermittent or inoperative
• Turn signal lever does not respond consistently
• Windshield washer spray or wiper speed control is not working
• Indicator markings are worn or difficult to read

Installation Notes

Verify connector shape, terminal count, and vehicle equipment before installation. This DS-1225 uses a bolt-on mounting style, a female connector, and blade terminals, so matching the original switch configuration is important for proper operation. Confirm whether the vehicle is equipped with tachometer, cruise control, or intermittent wipers, since the listed fitment includes specific equipment exclusions for certain Mitsubishi Mighty Max and Dodge Ram 50 applications.

Quality Assurance

Standard Ignition supplies this as a new electrical switch assembly for direct replacement use in the listed applications. Confirm fitment against the vehicle’s original multifunction switch layout before ordering.