Dorman 645-103 Side Marker Light Socket - Front or Rear

Reliable Side Marker Light Socket for Ford, Jeep, Lincoln, and Mercury

The Dorman 645-103 side marker light socket is designed to provide a secure and durable electrical connection for side marker lights on select Ford, Jeep, Lincoln, and Mercury vehicles. Engineered with a rectangular bulb base and female blade terminals, this socket ensures consistent performance and compatibility with your vehicle's lighting system.

• Compatible with Ford F-150, F-250 Super Duty, F-350 Super Duty, Fusion, and Expedition models
• Fits Jeep Compass and Grand Cherokee
• Designed for Lincoln MKC, MKX, MKZ, and Milan vehicles
• Connector color options: black and brown for easy identification
• Blade terminal type with two female terminals for secure electrical contact
• Rectangular connector shape and bulb base type for precise fitment
• Includes one side marker light socket per package

Technical Details and Compatibility

The Dorman 645-103 side marker light socket features a rectangular bulb base type that matches the original equipment specifications for side marker lights on various Ford, Jeep, Lincoln, and Mercury models. The socket includes two female blade terminals, providing a reliable electrical connection without the need for additional wire harnesses. Available in black and brown connector colors, this socket is designed to integrate seamlessly with your vehicle's existing wiring system. The rectangular connector shape ensures a secure fit, reducing the risk of loose connections or electrical faults.

Common Applications and Problem Resolution

• Replacement for damaged or corroded side marker light sockets
• Fixes intermittent lighting issues caused by poor electrical contact
• Restores proper function to side marker lights on Ford F-150, Jeep Grand Cherokee, Lincoln MKZ, and other compatible models
• Addresses connector damage from wear or environmental exposure
• Supports maintenance and repair of vehicle lighting systems without requiring a full wiring harness replacement

Installation Notes and Tips

Installation of the Dorman 645-103 side marker light socket is straightforward and requires no additional wiring harness. Ensure the vehicle is powered off before beginning installation. Carefully disconnect the old socket by releasing the rectangular connector and blade terminals. Align the new socket’s rectangular connector and blade terminals with the vehicle’s wiring harness, and firmly press until secure. Verify the connector color matches the original to maintain proper wiring orientation. Test the side marker light function before completing the installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, ensuring reliable fit and function. The 645-103 side marker light socket undergoes quality control inspections to maintain consistent performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.