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91-96 Escorts are famous for the connector going into the blower resistor to melt.... mine throws an occasional spark... it is located under the passenger side of the dashboard and has 4 blue wires, each one thicker gauge than the last, for speeds 1,2,3,4 thin to thick

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Q: 1993 escort blower switch does not operate on high It works on all others what could be wrong?
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