Dorman 973-149 HVAC Blower Motor Resistor Kit

Dorman 973-149 HVAC Blower Motor Resistor Kit

Dorman 973-149 is an HVAC blower motor resistor kit that replaces a failed original resistor and includes the matching harness pigtail. It is built for vehicles where heat or corrosion has damaged the factory connector, restoring proper blower motor speed control.

Compatible with select Toyota 4Runner and Toyota Pickup applications, this kit addresses common blower circuit failures in older HVAC systems. The Dorman 973-149 replacement is a direct-fit service part for specific 1984-1989 Toyota models, including heavy-heater Pickup applications.

Key Features

• Includes a blower motor resistor and wire harness pigtail
• Female connector with male blade terminals
• 4-wire, 4-terminal design for the specified HVAC circuit
• Single mounting hole layout for the listed applications
• 5-inch wiring harness length
• Replacement for overheated or corroded original equipment resistor assemblies

Detailed Description

This HVAC blower motor resistor kit is made for restoring blower fan speed operation when the original resistor or connector has been damaged by heat, corrosion, or electrical wear. The Dorman 973-149 combines the resistor and harness pigtail needed to service the affected circuit, helping return the HVAC blower motor to normal multi-speed operation on select Toyota 4Runner and Toyota Pickup models. This part cross-references Standard Ignition RU950 for the same application.

Use this Dorman 973-149 when diagnosing intermittent blower speeds, a blower motor that only works on certain settings, or visible damage at the resistor connector. It is a practical replacement for aging Toyota HVAC electrical connectors where the factory resistor assembly has failed.

What It Helps Fix

• Blower motor works only on one speed
• Loss of low or medium fan settings
• Heat-damaged blower resistor connector
• Corroded HVAC electrical terminals
• Intermittent cabin airflow control

Installation Notes and Tips

Verify connector style, terminal count, and mounting location before installation. This part uses blade terminals and a female connector, so matching the original harness is important for proper fitment. Inspect the blower motor connector and surrounding wiring for heat damage before installing the new resistor kit on a Toyota 4Runner or Toyota Pickup.

• Fits 1987-1989 Toyota 4Runner, N/A
• Fits 1984-1988 Toyota Pickup, N/A, w/Heavy Heater

Quality Assurance

Dorman replacement electrical parts are engineered to address common failure points in original HVAC components and restore serviceability to the affected circuit. Part number 973-149 is built as a direct replacement for the listed Toyota applications.