Dorman 645-181 Headlight Wiring Harness

Headlight Wiring Harness for Ford and Lincoln

Dorman 645-181 is a headlight wiring harness built to match the function and performance of the original component on specified Ford and Lincoln vehicles. It is engineered for reliable electrical connection, with a 16-cavity layout, 18-gauge wire, and a black irregular female connector for direct replacement use.

Key Features

• OE-style headlight wiring harness for select Ford and Lincoln applications
• 16-cavity connector design with female blade-pin terminals
• 18-gauge wiring with green wire color
• 10.75-inch harness length for a factory-style routing profile
• Black connector housing with irregular shape
• Includes waterproof butt connectors for sealed splicing
• Cross-references Ford CU2Z14S411ADA for the same application

Detailed Description

This Dorman headlight wiring harness, part number 645-181, is made for vehicles that use a 16-cavity headlamp connector and need a dependable replacement for damaged or heat-affected wiring. The harness is designed for consistent electrical performance and durability, helping restore proper headlight circuit connection on models such as the Ford F-150, Ford Explorer, Ford Fusion, Ford Mustang, and Lincoln MKZ. It also serves other select Ford and Lincoln vehicles listed in the fitment data, including the Ford Edge, Ford Fiesta, Lincoln MKC, and Lincoln Navigator.

With 16 wires, 16 connectors, and female blade-pin terminals at both ends, this harness follows the original connection style for the specified applications. The 10.75-inch length supports a clean installation path, while the included waterproof butt connectors help create sealed wire joins during repair. If you are searching for a headlight wiring harness for a 2015-2019 Ford F-150, 2016-2020 Ford Explorer, or 2013-2019 Lincoln MKZ, Dorman 645-181 is built for those exact vehicle families.

Common Problems This Part Can Address

• Burned, brittle, or melted headlight connector wiring
• Intermittent headlamp operation caused by damaged terminals
• Corrosion or moisture intrusion at the headlight connection
• Poor electrical contact at the factory harness plug
• Repair needs on vehicles with a 16-cavity headlight connector

Installation Notes and Tips

Verify the vehicle’s headlight connector cavity count and terminal style before installation. Match the harness to the original routing and connector orientation, and inspect the surrounding wiring for heat damage or corrosion before splicing. This part is listed for N/A position applications and is used on select Ford and Lincoln models including the Ford Escape, Ford Expedition, Lincoln Aviator, and Lincoln Corsair.

Quality Assurance

Dorman designs this headlight wiring harness to match the function and performance of the original component on specified makes, years, and models. The construction focuses on reliability and durability for electrical repair work on Ford and Lincoln lighting circuits. Part number 645-181 is a direct-reference replacement for the listed application family.