Standard Ignition RU-258 HVAC Blower Motor Resistor

Reliable HVAC Blower Motor Resistor for Ford and Mazda Vehicles

The Standard Ignition RU-258 HVAC blower motor resistor is designed to restore proper blower motor function in select Ford and Mazda models. Engineered for durability and precise fitment, this resistor supports multiple fan speeds to ensure consistent climate control performance.

• Compatible with Ford 626, Mazda MX-6, and Ford Probe models
• Supports 3-5 speed blower motor operation
• 12-volt electrical rating for standard automotive systems
• Rectangular female connector with 3 cavities and 7 male blade terminals
• Screw attachment method for secure installation

Product Features and Specifications

The RU-258 blower motor resistor by Standard Ignition features a rectangular female connector designed with three cavities to interface seamlessly with your vehicle's wiring harness. It includes seven male blade terminals to ensure reliable electrical contact. This resistor supports blower motors with 3 to 5 speed settings, making it suitable for various HVAC configurations found in Ford 626, Mazda MX-6, and Ford Probe models. The unit mounts securely using screws, though hardware and mounting brackets are not included. It operates on a standard 12-volt system and does not come with a wiring harness or additional wires, simplifying replacement in vehicles with existing harnesses.

Common Applications and Problem Resolution

• Restores blower motor speed control in Ford 626, Mazda MX-6, and Ford Probe HVAC systems
• Resolves issues with blower motor only working on one speed or not at all
• Fixes inconsistent or intermittent blower motor operation
• Addresses overheating or failure of original blower motor resistor
• Improves overall HVAC system reliability and passenger comfort

Installation Notes and Tips

Installation of the Standard Ignition RU-258 blower motor resistor requires removal of the old resistor from the HVAC housing, typically secured by screws. Ensure the vehicle’s ignition is off and disconnect the battery before beginning. The rectangular female connector should align with the vehicle’s wiring harness connector, which has three cavities. Confirm the resistor’s orientation and terminal connections before securing it in place. Since no mounting brackets or hardware are included, reuse existing screws or hardware from the original resistor. This part is designed for direct replacement without modification.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The RU-258 blower motor resistor undergoes rigorous quality control to ensure reliable performance in Ford 626, Mazda MX-6, and Ford Probe vehicles. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.