Standard Ignition RU-878 HVAC Blower Motor Resistor

Reliable HVAC Blower Motor Resistor for Saab 9-3 and 9-3X

The Standard Ignition RU-878 HVAC blower motor resistor is designed to restore proper blower motor function in Saab 9-3 and 9-3X models. Engineered with durable materials and precise electronic coil technology, this resistor ensures consistent performance across multiple fan speeds.

• Compatible with Saab 9-3 and 9-3X HVAC systems
• Electronic coil type for efficient current regulation
• Supports 3 to 5 blower motor speeds with 3 switch positions
• Durable plastic and metal housing for long-lasting use
• Rectangular connectors with male and female terminals
• Screw attachment method for secure installation
• Includes 2 connectors and 6 blade-type terminals

Product Details and Specifications

The RU-878 blower motor resistor from Standard Ignition is built to meet the specific HVAC requirements of Saab 9-3 and 9-3X vehicles. It features an electronic coil that regulates voltage to the blower motor, enabling smooth operation across 3 to 5 speed settings. The resistor’s housing combines plastic and metal components to provide durability and heat resistance. It connects via two rectangular connectors, each equipped with male and female blade terminals, ensuring a reliable electrical connection. The resistor mounts securely using screws, though mounting brackets and wiring harnesses are not included.

Common Applications and Problem Resolution

• Restores blower motor speed control in Saab 9-3 and 9-3X HVAC systems
• Resolves issues with blower motor only working on certain speeds
• Fixes intermittent or no airflow from the vehicle’s HVAC vents
• Addresses overheating or failure of the blower motor resistor
• Eliminates electrical connection problems due to worn terminals

Installation Notes and Tips

Installation of the Standard Ignition RU-878 blower motor resistor requires removal of the old resistor from the HVAC housing. Use the screw attachment points to secure the new resistor firmly in place. Ensure connectors are properly aligned and fully seated to avoid electrical faults. Since no wiring harness or mounting brackets are included, reuse existing components from the original resistor assembly. Verify blower motor operation across all speed settings after installation.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The RU-878 blower motor resistor undergoes rigorous quality control to ensure reliable performance in Saab 9-3 and 9-3X vehicles. While specific warranty details may vary, Standard Ignition typically offers coverage against defects in materials and workmanship. Consult product documentation or your parts provider for exact warranty terms.