See the photo of a ford blower motor resistor. With that said failed blower resistor assemblies dont solve all of the possible failures.

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This vehicle came in with the blower motor running at high speed even with the engine and key off and key out of the ignition.

Car blower motor resistor wiring diagram. I bought the most hated car on the internet and made. Factory car stereo. Its used in cars where the blower motor has only 4 or 5 fixed speeds as on the left side in this diagram.
Ford blower motor resistor problems remain the most common solution to interior fan malfunctions on ford cars and trucks. This is why at the bottom of the article we include a 2008 f150 blower motor wire diagram. Replacing wiring and resistor block in a gmc emvoy.
By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Check fusescheck power and ground at blower motorif the blower has only one speed it will mean a resistor is shotan easy test if blower is not working at all is to turn blower on hi and tap on the bottom of blower motor with hammer if the blower motor kicks in then you know the motor is the problemif the motor still does not workthe wiring to the switch and the switch will need to be. Wiring diagramthe blower resistor for the heater ac blower motor answered by a verified jeep mechanic we use cookies to give you the best possible experience on our website.
The blower motor resistor is really a pack of resistors wired in series. This is very common when the resistormodule shorts out internally. Many car makers use a blower motor resistor in conjunction with a multiple speed switch to provide three or four blower motor speeds.
A blower motor resistor is a simple electric resistor. Blower wiring diagrams for three or four speed systems. I also show the blower motor resistor wiring diagram in case you need to put a new pigtail on the resistor like i did because it melted.
Blower motor wiring diagram. Blower motor resistor wire splice amperage draw test duration. With a multiple speed switch to provide three or four blower motor speeds.
Carmakers use these three common wiring methods to supply power and ground to the blower motor in a manual system using a blower motor resistor. Similar repair on chevy trucks and gmc trucks etc. In one design the car maker supplies battery power to the speed switch which switches the power to the appropriate connection on the blower.

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