Dorman Front HVAC Blower Motor Resistor Kit 973-407 — direct-fit resistor & harness pigtail

The Dorman 973-407 Front HVAC Blower Motor Resistor Kit is a complete replacement kit containing a resistive element and harness pigtail designed to restore blower fan speed control on compatible vehicles.

If the front blower in your vehicle only runs on one speed or stops responding to the climate control settings, the resistor assembly and its connector are common failure points. Dorman’s kit supplies a direct-fit resistor and the matching harness pigtail so you can swap a corroded or overheated factory resistor without splicing or jury-rigging. The part is engineered to match original equipment form and function and is supported by product engineering and quality checks in the U.S.

How will this kit fix blower fan speed issues?

When a blower motor resistor fails, certain fan speeds (often low or medium) stop working because the resistor stages that reduce current are bypassed or open. Replacing the resistor and its connector restores the circuit paths that provide multiple speed settings.

• Includes resistor element and harness pigtail for a complete repair
• Recreates original electrical pathways to restore all fan speed options
• Eliminates the need to bypass or splice the factory wiring

Is this Dorman part a direct replacement for the factory resistor?

Yes — this kit is manufactured to directly replace the original equipment resistor on specified model years and trims. It is built to match the mounting points and electrical connections of the OEM part for a bolt-in swap.

• Direct-fit design matches factory location and fasteners
• Pin configuration and connector style mirror the original harness
• Check vehicle compatibility using your make, model and trim level

What does the kit include and why is the harness pigtail important?

The kit supplies both the resistor assembly and the harness pigtail. Over time the plastic connector can corrode, melt, or break; replacing both pieces ensures reliable electrical contact and avoids recurring failures caused by a damaged connector.

• Complete kit: resistor plus harness pigtail for most repairs
• New connector prevents poor contacts or heat-related failures
• Saves time versus sourcing separate parts or performing repairs with temporary fixes

How do I confirm this resistor kit fits my vehicle?

Fitment varies by year, make and model, so verifying compatibility before purchase is essential. Use the vehicle selector or garage tool on the retailer’s site to confirm the Dorman 973-407 fits your exact trim and production year.

• Enter vehicle year, make and model into the fitment tool
• Compare the resistor’s mounting style and connector to the original
• Consult vehicle service guides if needed for access and replacement steps

Who this is for: This Dorman 973-407 kit is intended for DIY mechanics, professional technicians, and vehicle owners troubleshooting front HVAC blower problems caused by overheated or corroded resistors and connectors. It’s suited to anyone seeking a direct-replacement, OE-style solution that restores multi-speed operation without complex wiring modifications. If you want a dependable, complete resistor and harness assembly to return your HVAC blower to normal function, this kit provides the necessary components and fitment checks to get the repair done cleanly and reliably.