Standard Ignition RU-406 HVAC Blower Motor Resistor

Reliable HVAC Blower Motor Resistor for Ford and Mercury Models

The Standard Ignition RU-406 HVAC blower motor resistor is designed to restore proper blower motor function in select Ford and Mercury vehicles. Engineered for compatibility with models such as the Escort, Lynx, Tempo, Topaz, and Tracer, this resistor ensures consistent control over your HVAC blower speeds.

• Compatible with Ford Escort, Lynx, Tempo, Topaz, and Mercury Tracer
• Supports 3-5 speed blower motor operation
• Rectangular female connector with 2 cavities for secure connection
• Blade-type male terminals, 7 in total, for reliable electrical contact
• Screw attachment method for stable mounting without included hardware
• No wiring harness or mounting brackets included

Product Details and Specifications

The RU-406 blower motor resistor from Standard Ignition is designed to regulate the electrical current to the HVAC blower motor, allowing for multiple fan speeds between 3 and 5 settings. It features a rectangular female connector with two cavities, ensuring a precise fit with the vehicle’s wiring harness. The resistor terminals are blade type, male gender, with a total of seven terminals to maintain proper electrical flow. Installation requires screwing the resistor into place, though mounting hardware is not included. This part does not come with a wiring harness or mounting brackets, so existing vehicle components will be used during installation.

Common Applications and Problem Resolution

• Restores blower motor speed control in Ford Escort, Lynx, Tempo, Topaz, and Mercury Tracer
• Resolves issues with blower motor stuck on one speed or not working at all
• Fixes intermittent blower motor operation or inconsistent fan speeds
• Addresses electrical resistance failures causing HVAC blower malfunction

Installation Notes and Tips

Installation of the RU-406 blower motor resistor requires removal of the old resistor and securing the new unit using screws (hardware not included). Ensure the rectangular female connector aligns properly with the vehicle’s wiring harness to avoid connection issues. Since no wiring harness or mounting brackets are included, verify the existing components are in good condition before installation. It is recommended to disconnect the vehicle battery before starting the replacement to prevent electrical shorts.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit and function. The RU-406 blower motor resistor undergoes quality control testing to ensure reliable performance in compatible Ford and Mercury models. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.