Standard Ignition DS-747 Headlight Dimmer Switch

Reliable Headlight Dimmer Switch for Ford Cougar and Mercury Thunderbird

The Standard Ignition DS-747 headlight dimmer switch is designed to provide precise control over your vehicle's lighting functions. Engineered for compatibility with Ford Cougar and Mercury Thunderbird 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 connector with 3 cavities and 19 male blade terminals
• Includes turn signal control and combination switch functions
• Features latching high beam operator and momentary high beam flasher
• New, not remanufactured, for consistent performance

Product Features and Specifications

The DS-747 headlight dimmer switch from Standard Ignition is a combination switch that integrates multiple lighting controls into one unit. It includes turn signal control and supports both latching high beam operation and momentary high beam flashing. The switch is finished in durable black plastic and features indicator markings to assist with operation. It connects via a rectangular female connector with three cavities and nineteen male blade terminals, ensuring a secure and reliable electrical connection. This switch is designed specifically for Ford Cougar and Mercury Thunderbird vehicles, providing a direct replacement that meets OEM standards.

Applications and Common Issues Addressed

• Restores proper headlight dimming and high beam functionality
• Resolves turn signal control failures or intermittent operation
• Fixes issues with high beam flashers not responding
• Eliminates problems caused by worn or damaged switch contacts
• Replaces faulty combination switches affecting multiple lighting functions

Installation Notes and Tips

The DS-747 headlight dimmer switch installs using a bolt-on attachment method, providing a secure fit without the need for modifications. Ensure the vehicle's battery is disconnected before installation to prevent electrical shorts. The switch connects via a rectangular female connector with three cavities; verify connector compatibility before installation. Proper alignment of the switch and connectors is essential for reliable operation. Refer to the vehicle's service manual for detailed removal and installation procedures specific to Ford Cougar and Mercury Thunderbird models.

Quality Assurance and Warranty Information

Standard Ignition manufactures the DS-747 as a new replacement part, not remanufactured, to maintain consistent quality and reliability. The switch undergoes rigorous testing to meet or exceed OEM specifications. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship. This ensures confidence in the product's durability and performance when installed in compatible Ford Cougar and Mercury Thunderbird vehicles.