Standard Ignition DS-1678 Headlight Dimmer Switch

Reliable Headlight Dimmer Switch for Ford Expedition and Lincoln Navigator

The Standard Ignition DS-1678 headlight dimmer switch is designed to provide precise control over your vehicle's lighting functions. Engineered for compatibility with Ford Expedition and Lincoln Navigator models, this switch ensures seamless integration and dependable performance.

• Bolt-on attachment method for secure installation
• Female rectangular connectors with 2 cavities for reliable electrical connection
• Combination switch functionality including turn signal and high beam control
• Includes indicator markings and latching high beam operator
• Supports momentary high beam flasher and rear window washer spray
• Multiple wiper speed and delay settings integrated
• New, not remanufactured, ensuring original equipment quality

Product Features and Specifications

The DS-1678 headlight dimmer switch from Standard Ignition is a comprehensive combination switch designed to manage multiple lighting and wiper functions. It features a bolt-on attachment method for straightforward installation and uses two female rectangular connectors with 15 male blade terminals, ensuring a secure and stable electrical connection. This switch includes turn signal control, latching high beam operation, and momentary high beam flasher capabilities, enhancing driver control and safety. Additionally, it supports rear window washer spray and rear window wiper delay and speed settings, providing integrated control for various vehicle functions. Indicator markings are included for ease of use and clarity during operation.

Compatible Vehicles and Applications

This headlight dimmer switch is specifically compatible with Ford Expedition and Lincoln Navigator models. It is designed to replace factory switches that control headlight dimming, turn signals, and rear window wiper functions. The DS-1678 is ideal for addressing issues such as:

• Intermittent or non-functioning headlight dimmer operation
• Faulty turn signal or directional indicator control
• Malfunctioning rear window washer spray or wiper delay settings
• Inoperative high beam flasher or latching high beam switch
• Wiper speed control failures

Installation Notes and Tips

Installation of the Standard Ignition DS-1678 headlight dimmer switch requires basic automotive electrical knowledge. The bolt-on attachment method allows for a secure fit without modification. Ensure the vehicle's battery is disconnected before beginning installation to prevent electrical shorts. Verify connector orientation and terminal alignment to avoid damage. After installation, test all lighting and wiper functions to confirm proper operation.

Quality Assurance and Warranty

Standard Ignition provides this DS-1678 headlight dimmer switch as a new replacement part, meeting or exceeding original equipment specifications. The product undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship.