HomeElectrical, Lighting and Body > Electrical ConnectorsDorman 645-201 Headlight Connector
Part #: 645-201

Dorman 645-201 Headlight Connector

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⚙️ 26 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, GMC, Buick, and Oldsmobile, Trailblazer, Trailblazer EXT, Envoy, Envoy XL, Rainier, Envoy XUV, and Bravada
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Reliable Headlight Connector for Buick, Chevrolet, GMC, and Oldsmobile

The Dorman 645-201 headlight connector is designed to provide a secure and efficient electrical connection for your vehicle's headlight system. Engineered with tin plated brass, this connector ensures reliable conductivity and corrosion resistance for Buick Bravada, Chevrolet Trailblazer, GMC Envoy, and Oldsmobile models.

Key Features of the Dorman 645-201 Headlight Connector

  • Constructed from durable tin plated brass for enhanced electrical conductivity
  • 6.75-inch wiring harness length for flexible installation
  • Compatible with 19-gauge wire for standard automotive wiring systems
  • Spade terminal type for secure and easy connection
  • Includes 1 socket per package

Detailed Product Description

The Dorman 645-201 headlight connector is specifically designed for use in electrical, lighting, and body applications, focusing on headlight connections. Its tin plated brass material offers resistance to oxidation, ensuring consistent electrical performance over time. The 6.75-inch wiring harness length provides sufficient reach for installation within the headlight assembly, while the 19-gauge wire compatibility matches common automotive wiring standards. The spade terminal type allows for straightforward attachment and detachment, facilitating maintenance and replacement tasks.

Compatible Vehicles and Common Applications

This headlight connector is compatible with several GM makes and models, including Buick Bravada, Chevrolet Trailblazer and Trailblazer EXT, GMC Envoy, Envoy XL, Envoy XUV, Rainier, and Oldsmobile vehicles. It is ideal for replacing worn or damaged headlight connectors that cause intermittent lighting issues or poor electrical contact.

  • Resolves headlight flickering or intermittent lighting problems
  • Replaces corroded or damaged connectors in the headlight wiring harness
  • Restores secure electrical connections for improved headlight performance
  • Addresses loose or faulty spade terminal connections
  • Prevents electrical shorts caused by degraded connectors

Installation Notes and Tips

When installing the Dorman 645-201 headlight connector, ensure the vehicle's battery is disconnected to avoid electrical hazards. Verify that the wire gauge matches the 19-gauge specification for optimal fit and performance. Use appropriate tools to securely attach the spade terminals, avoiding over-tightening which can damage the connector. Inspect the wiring harness length to confirm the 6.75-inch reach is sufficient for your specific vehicle application.

Quality Assurance and Warranty Information

Dorman manufactures the 645-201 headlight connector to meet industry standards for electrical components. The tin plated brass construction supports long-term durability and reliable conductivity. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to the product packaging or Dorman's official documentation for exact warranty terms.

BrandDorman
Part Number645-201
MaterialTin Plated Brass
Package Contents1 Socket
Terminal TypeSpade
Weather ResistantNo
Wire Gauge Measurement19
Wiring Harness Length6.75

This part fits 26 vehicles. Search below:

YearMakeModelPositionNotes
2006ChevroletTrailblazerN/A2 Way; Female w/Leads; Low Beam
2006ChevroletTrailblazer EXTN/A2 Way; Female w/Leads; Low Beam
2006GMCEnvoyN/A2 Way; Female w/Leads; Low Beam
2006GMCEnvoy XLN/A2 Way; Female w/Leads; Low Beam
2005BuickRainierN/A2 Way; Female w/Leads; Low Beam
2005ChevroletTrailblazerN/A2 Way; Female w/Leads; Low Beam
2005ChevroletTrailblazer EXTN/A2 Way; Female w/Leads; Low Beam
2005GMCEnvoyN/A2 Way; Female w/Leads; Low Beam
2005GMCEnvoy XLN/A2 Way; Female w/Leads; Low Beam
2005GMCEnvoy XUVN/A2 Way; Female w/Leads; Low Beam
2004BuickRainierN/A2 Way; Female w/Leads; Low Beam
2004ChevroletTrailblazerN/A2 Way; Female w/Leads; Low Beam
2004ChevroletTrailblazer EXTN/A2 Way; Female w/Leads; Low Beam
2004GMCEnvoyN/A2 Way; Female w/Leads; Low Beam
2004GMCEnvoy XLN/A2 Way; Female w/Leads; Low Beam
2004GMCEnvoy XUVN/A2 Way; Female w/Leads; Low Beam
2004OldsmobileBravadaN/A2 Way; Female w/Leads; Low Beam
2003ChevroletTrailblazerN/A2 Way; Female w/Leads; Low Beam
2003ChevroletTrailblazer EXTN/A2 Way; Female w/Leads; Low Beam
2003GMCEnvoyN/A2 Way; Female w/Leads; Low Beam
2003GMCEnvoy XLN/A2 Way; Female w/Leads; Low Beam
2003OldsmobileBravadaN/A2 Way; Female w/Leads; Low Beam
2002ChevroletTrailblazerN/A2 Way; Female w/Leads; Low Beam
2002ChevroletTrailblazer EXTN/A2 Way; Female w/Leads; Low Beam
2002GMCEnvoyN/A2 Way; Female w/Leads; Low Beam
2002GMCEnvoy XLN/A2 Way; Female w/Leads; Low Beam

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1P158588988700953EC1182PT1183PT2079S-1685

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.