Help your heater and A/C fan step through its speed settings with the Standard Ignition Blower Motor Resistor RU-642. This front-position resistor varies the resistance in the blower motor circuit so the fan can run at different speeds. It fits many vehicles, among them the 2008-2010 Dodge Grand Caravan, 2008-2010 Chrysler Town & Country and 2009-2014 Volkswagen Routan, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list and engine details.
A front HVAC blower motor resistor may need replacing if the fan runs only on its highest setting, or if one or more speed settings no longer work. Switches, wiring and the blower motor itself can cause similar symptoms, so diagnose the circuit before replacing parts.
Interchange: RU1332 · 68029723AA · 68050014AA · JA1738 · BR543 · 7B0959263B
This part cross-references / interchanges with the following part numbers:
Is RU-642 a direct-fit Dodge Grand Caravan blower motor resistor?
Yes. It is listed as a direct-fit replacement for the 2008-2010 Dodge Grand Caravan. Check the Buyer's Guide tab for your exact vehicle.
What does a blower motor resistor do?
It varies the resistance in the front blower motor circuit so the fan can run at different speeds for heater and A/C airflow.
What are the signs of a failing blower motor resistor?
A fan that works only on high, or speed settings that no longer respond, can be a sign. Switches, wiring or the motor can cause similar symptoms, so diagnose the circuit first.
Why does this resistor use copper connectors?
Standard uses premium copper electrical connectors to deliver more precise resistance values. They are designed to improve resistor performance and give a longer part life.
How is the RU-642 installed?
Access and steps vary by vehicle, so follow the vehicle service information. Disconnect the battery before working on the blower circuit, and handle the connector with care.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
