Dorman 973-412 HVAC Blower Motor Resistor Kit - Front or Rear

Dorman 973-412 HVAC Blower Motor Resistor Kit

Dorman 973-412 is an HVAC blower motor resistor kit that replaces an overheated or corroded original resistor on select Ford and Mazda vehicles. It includes the resistor and harness pigtail needed to restore blower speed control in applications such as Ford E-150, E-250, E-350, Ranger, Explorer, and Mazda B-Series trucks.

Key Features

• HVAC blower motor resistor kit with resistor and harness pigtail
• Blade terminal type for the electrical connection
• Direct replacement for select rear, front, and N/A-position HVAC applications
• Used on Ford and Mazda models with factory A/C, auxiliary A/C, or integral A/C configurations where listed
• Part number 973-412 for service and catalog lookup

Detailed Description

This Dorman HVAC blower motor resistor kit is built for vehicles where the original resistor has failed from heat damage or connector corrosion. It addresses blower speed issues by replacing the resistor and the damaged harness connection in one service part. Compatible applications include Ford E-150, E-250, E-350, Bronco, Explorer, Ranger, Windstar, Aerostar, and Mazda B2300, B3000, B4000, and Navajo. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Blower motor only working on certain fan speeds
• No cabin airflow from the HVAC system
• Intermittent blower operation caused by heat-damaged resistor circuits
• Corroded or overheated connector terminals at the resistor harness
• Loss of rear HVAC blower control on applicable Ford vans and wagons

Installation Notes and Tips

Review the vehicle-specific fitment notes before ordering, since applications vary by year, position, and HVAC configuration. This kit uses blade terminals and does not include mounting hardware or a gasket/seal. Package contents include the blower motor resistor and instructions. Confirm the original connector style and thermal limiter requirements where listed for Ford and Mazda applications.

Quality Assurance

Dorman supplies this resistor kit as a service replacement for worn or heat-damaged original equipment components. The part is engineered to restore the electrical path used by the blower motor resistor circuit on the listed vehicles.