Dorman 645-735 HVAC Blower Motor Resistor Connector

Reliable HVAC Blower Motor Resistor Connector for BMW Models

The Dorman 645-735 HVAC blower motor resistor connector is designed to restore proper electrical connections in your BMW's heating and cooling system. Engineered for compatibility with various BMW models, this connector ensures consistent blower motor performance.

• Wire gauge measurement: 16 AWG for optimal current flow
• Five-wire pigtail with bullet-type female terminals
• Nickel-plated terminal material for corrosion resistance
• Overall length of 20 inches for flexible installation
• Includes one pigtail and five butt connectors for secure splicing

Durable Design and Precise Fitment for BMW HVAC Systems

This HVAC blower motor resistor connector from Dorman features a 16-gauge wire setup with five wires, each terminating in bullet-style female terminals. The nickel-plated terminals provide enhanced durability and resistance to corrosion, which is critical for maintaining reliable electrical connections in the HVAC system. With an overall length of 20 inches, the pigtail offers sufficient reach for straightforward installation in BMW models such as the 320i, 328i, 330i, M3, M5, X3, and X5. The package includes five butt connectors, allowing for secure and professional splicing to existing wiring harnesses.

Compatible BMW Models and Part Number Reference

This connector is compatible with a wide range of BMW vehicles, including the 320i, 323Ci, 323i, 325Ci, 325i, 325xi, 328Ci, 328i, 330Ci, 330i, 330xi, 525i, 528i, 530i, 540i, M3, M5, X3, and X5. When replacing your HVAC blower motor resistor connector, reference part number 645-735 to ensure proper fit and function.

Common HVAC Electrical Issues Addressed

• Intermittent blower motor operation or failure
• Loss of blower speed control
• Corroded or damaged resistor connector terminals
• Electrical shorts or open circuits in blower motor wiring
• HVAC system overheating due to poor electrical contact

Installation Notes and Tips

• Disconnect the vehicle battery before installation to prevent electrical shorts
• Use the included butt connectors to splice wires securely and ensure proper insulation
• Verify wire gauge compatibility (16 AWG) with your vehicle’s wiring harness
• Route the pigtail carefully to avoid contact with moving parts or heat sources
• Test blower motor operation after installation to confirm proper function

Quality Assurance and Warranty Information

Dorman manufactures this HVAC blower motor resistor connector to meet or exceed OEM specifications for fit, form, and function. The nickel-plated terminals provide enhanced corrosion resistance, contributing to long-term reliability. This part is backed by Dorman’s limited warranty, ensuring coverage against defects in material and workmanship under normal use.