Standard Ignition HVAC Blower Motor Resistor P/N:RU-870
Standard Ignition RU-511 blower motor resistor for the 1993-1997 Volvo 850 sets the speed steps of the A/C and heater blower motor. Made for Volvo applications, it is designed to restore variable speed control of the blower motor.
A blower that runs on only some speeds, or not at all, can be a sign of a failed resistor. Those signs alone do not prove the resistor is the problem, since a blown fuse can produce them too. If the HVAC blower motor resistor is the cause, this one replaces it.
Standard Ignition RU-511 fits the 1993-1997 Volvo 850, which takes one.
Fit and size
Build and materials
One blower motor resistor. The wiring harness, mounting bracket and hardware are not included, so plan on new screws, as the old ones may not be reusable.
Interchange: RU1204 · JA1696 · BR414 · 9137937 · 91379370
This part cross-references / interchanges with the following part numbers:
Is the Standard Ignition RU-511 the right resistor for the 1993-1997 Volvo 850?
Yes. Standard Ignition RU-511 is made for the 1993-1997 Volvo 850, and that car takes one.
Does the RU-511 come with a wiring harness or mounting bracket?
No. Standard Ignition RU-511 is the resistor alone; the wiring harness, mounting bracket and hardware are not included.
How many terminals and speeds does this blower motor resistor have?
This resistor has four male blade terminals and is listed as 3-5 speed on a 12-volt circuit. Its connector is rectangular and female, with one cavity.
My blower only works on some speeds. Could the resistor be the reason?
Possibly. A blower that runs on only some speeds is one sign of a failed resistor. If the resistor is the cause, this part replaces it.
Is Standard Ignition RU-511 the same as RU1204?
RU1204 is listed as an interchange number that Standard Ignition RU-511 replaces. The full list of cross-reference numbers is on the Interchange line.
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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.