Standard Ignition RU-399 HVAC Blower Motor Resistor - Front or Rear

Reliable HVAC Blower Motor Resistor for Chrysler, Dodge, Jeep

The Standard Ignition RU-399 HVAC blower motor resistor is designed to restore proper blower motor speed control in select Chrysler, Dodge, and Jeep vehicles. Engineered for durability and precise fitment, this resistor ensures consistent HVAC performance across multiple models.

Key Features of Standard Ignition RU-399

• Bolt-on attachment method for secure installation
• Female connector with two connectors featuring square and rectangular shapes
• Includes mounting bracket(s) for easy setup
• Supports 3-5 speed blower motor operation
• Five blade-type male terminals with five connector cavities
• No wiring harness or hardware included

Detailed Product Description

The Standard Ignition RU-399 blower motor resistor is specifically designed to regulate blower motor speeds in HVAC systems of Chrysler, Dodge, and Jeep vehicles such as the 300, Aspen, Caravan, Charger, Commander, Durango, Grand Caravan, Grand Cherokee, Grand Voyager, Liberty, Magnum, Pacifica, Town & Country, and Voyager. This resistor features a bolt-on attachment method and comes with mounting brackets to ensure a secure and stable fit. The female connector has two connectors with square and rectangular shapes, accommodating five blade-type male terminals and five connector cavities. This design supports blower motors with 3 to 5 speed settings, providing reliable control over your vehicle’s heating and cooling system. Note that this part does not include a wiring harness or additional hardware, so existing components will be reused during installation.

Common HVAC Issues Addressed by RU-399

• Inconsistent blower motor speeds or blower stuck on one speed
• HVAC blower motor not responding to speed control settings
• Intermittent blower operation or complete blower failure
• Overheating or electrical resistance issues in the blower motor circuit
• Loss of HVAC airflow control in Chrysler, Dodge, or Jeep models listed

Installation Notes and Tips

• Ensure the vehicle’s ignition is off before beginning installation
• Locate the blower motor resistor in the HVAC housing, typically under the dashboard or glove box
• Remove the old resistor by unbolting and disconnecting the wiring harness carefully
• Install the RU-399 resistor using the included mounting brackets and bolt it securely
• Reconnect the female connectors ensuring proper alignment with the male blade terminals
• Test blower motor speeds after installation to confirm proper operation

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and fitment. The RU-399 blower motor resistor undergoes rigorous quality control to maintain durability and electrical integrity. Please refer to Standard Ignition’s warranty policy for specific coverage details.