Dorman 645-201 Headlight Connector

Headlight Connector for OE-Style Repair

Dorman 645-201 is a headlight connector built to match the appearance and function of the original hardware on specified vehicles. It uses tin plated brass terminals and a 19-gauge lead wire to support a dependable electrical connection at the low-beam headlamp circuit.

Compatible with 2002-2006 Chevrolet Trailblazer and Trailblazer EXT, 2002-2006 GMC Envoy and Envoy XL, 2004-2005 Buick Rainier, 2004-2005 GMC Envoy XUV, and 2003-2004 Oldsmobile Bravada, this Dorman 645-201 headlight connector is a direct-fit electrical repair part for the listed applications.

Key Features

• OE-style headlight connector for specified low-beam applications
• Tin plated brass material for stable terminal contact
• Spade terminal type with female lead connection
• 6.75-inch wiring harness length
• Designed for 2-way headlamp connector applications
• Fits Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and related models listed below

Detailed Description

This electrical connector is engineered as a replacement for the original headlight socket used on select GM SUVs. The design follows the original hardware layout so the connector mates correctly with the vehicle-side headlamp circuit. Dorman 645-201 is built with tin plated brass terminals to help maintain consistent conductivity, while the 19-gauge wire supports the low-beam lighting connection on the specified vehicles. If you are repairing a damaged, heat-affected, or corroded headlight plug on a Chevrolet Trailblazer, GMC Envoy, or Buick Rainier, this connector provides a direct replacement for the listed fitments.

This part cross-references Standard Ignition S-1685 for the same application.

What It Helps Fix

• Burned or melted headlight connector terminals
• Intermittent low-beam headlight operation
• Corrosion at the headlamp socket connection
• Loose or damaged female terminal contact
• Electrical resistance caused by worn connector hardware

Installation Notes and Tips

Verify the vehicle’s headlamp connector style, wire count, and low-beam application before installation. Match the existing connector to the 2-way female-with-leads configuration shown in the fitment data. Inspect the surrounding wiring for heat damage or brittle insulation before connecting the new socket, and confirm a secure terminal fit after installation.

Quality Assurance

Dorman designs this connector to match the original appearance and function of the factory part on the listed applications. It is made from quality materials for reliable performance and durability in normal electrical service.

Vehicle Fitment

• Fits 2002-2006 Chevrolet Trailblazer, low beam
• Fits 2002-2006 Chevrolet Trailblazer EXT, low beam
• Fits 2002-2006 GMC Envoy, low beam
• Fits 2002-2006 GMC Envoy XL, low beam
• Fits 2004-2005 Buick Rainier, low beam
• Fits 2004-2005 GMC Envoy XUV, low beam
• Fits 2003-2004 Oldsmobile Bravada, low beam