Dorman Blower Motor Resistor Kit with Harness — 973-399 Fit for Ford/Lincoln/Mercury, OE-Style Replacement

The Dorman 973-399 Blower Motor Resistor Kit with Harness is a direct-replacement resistor and pigtail designed to restore HVAC blower speed control on specified Ford, Lincoln and Mercury models after required OE recall work is completed.

This kit contains the resistor module and the harness pigtail most commonly needed when a blower motor resistor overheats or corrodes. Dorman engineered the components to match original equipment performance for the listed Ford, Lincoln and Mercury vehicles. Because some affected vehicles had an OE blower motor recall, this replacement will function properly only after the factory recall repairs have been performed.

Which vehicles will this Dorman blower motor resistor kit fit?

The 973-399 kit is compatible with a broad range of Ford, Lincoln and Mercury cars, trucks and SUVs produced in the mid-2000s through late-2010s. Fitment depends on year, model and trim, so always confirm your exact vehicle in the fitment tool before ordering.

• Common fits include Ford Escape, Explorer, F-150, F-Series Super Duty, Flex, Mustang and Taurus
• Lincoln models like MKS, MKT and Navigator are included across multiple years
• Mercury fits include Mariner, Montego and Sable where listed
• Use the garage tool and Confirmed Fit indicator to verify your specific vehicle

How does this kit repair a failed blower motor resistor?

When a blower resistor fails it often causes limited fan speeds or no blower operation on certain settings. This kit replaces the resistor element and the electrical pigtail to restore the circuit continuity and reliable speed selection once the OE recall motor repair is completed.

• Includes resistor module that matches OE electrical characteristics
• Harness pigtail replaces corroded or heat-damaged connectors
• Simplifies most repairs by bundling both required parts in one kit
• Engineered for the same fit and function as the original equipment

Do I need to do anything before installing this replacement kit?

Yes — this kit will only work as intended after the vehicle has undergone the required OE blower motor recall repairs. Additionally, checking fitment and inspecting the blower motor and electrical connections before installation ensures the replacement resolves the issue.

• Confirm your vehicle is listed and verify trim in the garage tool
• Complete the manufacturer recall service on the original blower motor first
• Inspect the blower motor, connector cavity and wiring for damage
• Replace resistor and pigtail together to avoid repeat failures

What should I expect after installing the Dorman 973-399 kit?

After proper installation you should regain full blower speed control and improved HVAC responsiveness on the affected vehicle. The kit is built to match original performance, but overall operation depends on the condition of the blower motor and prior recall repairs being completed.

• Restored multi-speed fan control when motor and wiring are sound
• Secure, corrosion-resistant connector interface with the new pigtail
• Reduced risk of repeat overheating from damaged resistor connections
• Long-term function is tied to proper blower motor recall repair

Who is this for: The Dorman 973-399 Blower Motor Resistor Kit with Harness is intended for DIYers, independent mechanics and fleet service techs working on compatible Ford, Lincoln and Mercury vehicles listed in the fitment notes. Choose this kit when the blower resistor is overheated, corroded or failing and after the factory OE blower motor recall repairs have been completed; it provides the resistor element and the necessary harness pigtail to complete most standard HVAC blower resistor repairs.

Features at a glance:

• Direct replacement components engineered to match OE performance
• Kit includes resistor and harness pigtail for most repairs
• Requires OE recall blower motor repairs before use
• Verify vehicle fit with the garage tool and Confirmed Fit indicator