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Q: My fan blower won't work

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I checked all my fuses and pulled out my ac switch control panel and everything seemed fine. I have power constantly running to the relay but it won't go to the blower. It's got a good ground but even if my truck is on and all the switches for it are on it won't run power to the purple power wire that goes to my blower.

My car has 130000 miles.
My car has an automatic transmission.

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