Dorman 645-217 HVAC Blower Motor Resistor Connector

Dorman 645-217 Blower Motor Resistor Connector

Dorman 645-217 is an HVAC blower motor resistor connector for Jeep applications with a 4-wire, female blade-terminal design. It replaces an original connector damaged by corrosion or heat-related failure and uses corrosion-resistant terminals for steady electrical contact.

Compatible with 2005-2006 Jeep Grand Cherokee and 2006 Jeep Commander without automatic climate control, plus 2007 Jeep Commander and 2007 Jeep Grand Cherokee built to 6/05/06 without automatic climate control.

Key Features

• HVAC blower motor resistor connector for electrical repair at the blower circuit
• 4-wire configuration with female blade terminals
• 12-gauge wire measurement for robust current handling
• Tin brass, tin-plated terminal material for corrosion resistance
• 20-inch overall length for repair and splice routing
• Includes pigtail and butt connectors for connector replacement work

Detailed Description

This Dorman HVAC blower motor resistor connector is built for Jeep Commander and Jeep Grand Cherokee blower motor resistor repairs where the original connector has overheated, corroded, or lost terminal integrity. Part number 645-217 is a direct electrical repair solution for restoring a secure connection at the resistor circuit, helping maintain proper blower motor operation in the cabin HVAC system. This part cross-references Gates 1170 for the same application.

Use Dorman 645-217 when servicing 2005-2006 Jeep Grand Cherokee, 2006 Jeep Commander, 2007 Jeep Commander, and 2007 Jeep Grand Cherokee applications listed above. The connector’s blade-style female terminals and tin-plated brass construction support reliable contact at the resistor connection point.

Common Problems This Part Can Address

• Blower motor stops working because the connector is heat damaged
• Intermittent HVAC fan operation from corroded terminals
• Melted or discolored resistor connector housing at the blower circuit
• Poor electrical contact causing weak or inconsistent fan speeds
• Connector failure after moisture exposure or age-related corrosion

Installation Notes and Tips

Inspect the blower motor resistor and surrounding wiring before installation, since heat damage often affects more than the connector alone. Match the wire count, terminal style, and vehicle build date before splicing the new pigtail into the harness. Confirm the vehicle is not equipped with automatic climate control, and verify the 2007 models were built to 6/05/06 as listed in the fitment data.

Quality Assurance

Dorman designs replacement electrical connectors to restore damaged OE-style connections with corrosion-resistant terminal materials. Part number 645-217 is engineered for the specified Jeep Commander and Jeep Grand Cherokee applications and supports a clean repair of the blower motor resistor circuit.