HomeHVAC > Motors, Core, Case and Related ComponentsStandard Ignition RU-256 HVAC Blower Motor Resistor
Part #: RU-256

Standard Ignition RU-256 HVAC Blower Motor Resistor

⚙️ 4 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mazda, 323
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Reliable HVAC Blower Motor Resistor for Mazda 323

The Standard Ignition RU-256 HVAC blower motor resistor is designed to restore proper blower motor function in your Mazda 323. Engineered for precise fitment and reliable performance, this resistor supports multiple fan speeds to ensure consistent climate control.

  • Compatible with Mazda 323 models requiring a 12-volt blower motor resistor
  • Supports 3 to 5 blower motor speeds for versatile HVAC operation
  • Rectangular connector shape with male and female terminals for secure electrical connections
  • Includes a 29 cm (11 inch) wiring harness with 3 wires and 8 blade-type terminals
  • Attachment method: screw mount for stable installation

Product Details and Specifications

The Standard Ignition RU-256 blower motor resistor features a rectangular connector with three cavities, accommodating both male and female blade terminals. This design ensures compatibility with the Mazda 323's HVAC system wiring. The included wiring harness measures 29 cm (11 inches) in length, providing sufficient reach for installation without additional extensions. The resistor supports 3 to 5 speed settings, allowing your vehicle's blower motor to operate at multiple fan speeds for optimal cabin comfort. The screw attachment method secures the resistor firmly in place within the HVAC assembly.

Common Applications and Problem Resolution

  • Restores blower motor speed control in Mazda 323 HVAC systems
  • Resolves issues with blower motor stuck on a single speed or not working at all
  • Fixes intermittent blower motor operation caused by faulty resistor
  • Eliminates overheating or electrical faults related to resistor failure

Installation Notes and Tips

Installation requires removing the old blower motor resistor and securing the new RU-256 unit using screws. Ensure the rectangular connector is properly aligned and fully seated to avoid electrical connection issues. The wiring harness included simplifies the replacement process, but verify that the terminal connections match your vehicle's wiring configuration. No mounting brackets or additional hardware are included, so retain original components during removal.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for durability and performance. The RU-256 blower motor resistor is tested for electrical reliability and fitment accuracy. While specific warranty details are not provided here, Standard Ignition typically offers coverage against defects in materials and workmanship. Consult product documentation or your parts supplier for exact warranty terms.

BrandStandard Ignition
Part NumberRU-256
Attachment MethodScrew
Connector GenderMale; female
Connector ShapeRectangular
Hardware IncludedNo
Harness Length - cm29
Harness Length - inches11 "
Mounting Bracket(s) IncludedNo
Number Of Connector Cavities3
Number Of Speeds3-5 speed
Terminal GenderMale; female
Terminal Quantity8
Terminal TypeBlade
Voltage12
Wire Quantity3
Wiring Harness IncludedYes

This part fits 4 vehicles. Search below:

YearMakeModelPositionNotes
1989Mazda323N/A
1988Mazda323N/A
1987Mazda323N/A
1986Mazda323N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1468104361BR166JA1159RU-256RU956

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.