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A typical relay uses small (primary) wires to cause points to close, completing (closing) the circuit for the bigger wires that carry the current to operate a device, such as a cooling fan, starter or the high speed circuit on a bower motor. A blower resister unit has different paths for the electricity to flow for the slower fan speeds. I say this because some blower motor relays include the high speed relay and the resister unit. In that type of system, removing the relay keeps the blower fan (heater or air conditioner air movement) from occuring. It is very typical for these blower control devices to fail in a GM car and for the wiring to also be hurt in a GM truck. Visual inspection of the relay/resister that is located above the front passenger's feet will help you decide how much damage you have, as when the relay/resister is removed you can see heat damage to the faulty ones. Many of these are held in by bolts that have 5.5 mmm heads.
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Where is Ford Expedition blower motor relay?
Where is the blower motor relay at.
Where is the blower motor relay on a 2000 Chevy Silverado?
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no
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Where do you find the blower motor relay on a 1996 Plymouth Voyager?
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