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With all the effort and unnatural angles one must twist the neck and body to get the resistor OUT, it's easier just to replace it. Did mine yesterday (Aug 2010), simple. It cost $22 at Advanced Auto.

It's located under the dash on the passenger side. You'll need a Phillips head to remove a plastic cover, then a 9/32" ignition wrench to remove two hex head bolts. Takes about 20 minutes.

The blower motors also go bad slowly and you'll notice a significant drop on your voltmeter if your Cherokee has one) when you turn the blower switch on. The blower is on the passenger side of the engine compartment. Might be a good time to replace that too--it is accessed by moving the washer fluid reservoir out of the way in the engine compartment, then three 1/4" tiny bolts and a wiring harness clip. You may need a small pry bar to ease the blower motor out as it was likely put in with some sealant.

Be sure to disconnect the negative cable on the battery before replacing either of these things.

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Q: How does one test the resister on the blower motor?
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