Standard Ignition DS-742 Headlight Dimmer Switch

Reliable Headlight Dimmer Switch for Ford, Lincoln, and Mercury

The Standard Ignition DS-742 headlight dimmer switch is designed for precise control of your vehicle's lighting system. Engineered to fit Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis models, this switch ensures dependable operation and easy installation.

• Bolt-on attachment method for secure mounting
• Black plastic finish with indicator markings for clear visibility
• Rectangular female connectors with 2 cavities and 18 male blade terminals
• Includes turn signal control and latching high beam operator
• Momentary high beam flasher functionality included

Product Details and Features

The DS-742 headlight dimmer switch from Standard Ignition is a new replacement part designed to restore proper lighting control in select Ford, Lincoln, and Mercury vehicles. Its bolt-on installation method allows for a straightforward replacement process. The switch features a durable black plastic finish and is equipped with indicator markings to assist in operation. It includes two rectangular female connectors with 18 male blade terminals, ensuring compatibility with the vehicle's wiring harness. This switch supports turn signal control and offers both latching high beam and momentary high beam flasher functions, enhancing driver control over lighting. While it does not include cruise control or fog light operators, it covers essential headlight and turn signal functions for the specified models.

Compatible Vehicles and Applications

This headlight dimmer switch is compatible with the following vehicles:

• Ford Crown Victoria
• Lincoln Town Car
• Mercury Grand Marquis

Use the Standard Ignition DS-742 switch to address issues related to headlight dimming and turn signal operation in these models.

Common Issues Addressed by This Switch

• Intermittent or non-functioning headlight dimmer control
• Turn signals failing to activate or cancel properly
• High beam latching or flashing malfunctions
• Worn or damaged switch causing inconsistent lighting response
• Electrical connection problems due to faulty switch terminals

Installation Notes and Tips

Installation of the DS-742 headlight dimmer switch requires removal of the steering column covers to access the existing switch. The bolt-on attachment method simplifies mounting, but care should be taken to align connectors properly to avoid damage. Verify that the rectangular female connectors and blade terminals match the vehicle’s wiring harness before installation. It is recommended to disconnect the battery prior to installation to prevent electrical shorts. After installation, test all lighting functions including turn signals, high beam latching, and flashing to ensure proper operation.

Quality Assurance and Warranty

Standard Ignition provides this DS-742 headlight dimmer switch as a new replacement part manufactured to meet or exceed OEM specifications. The switch undergoes quality control testing to ensure reliable performance and durability. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.