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blower relay
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  1. How To's, DIY and Write ups
    I have an '06 2500HD pickup. The 7 wire plug to the blower resistor/relay module burned up the 5th wire (E) and the terminal is gone. I discovered that the E pin is a ground wire, and that it is common with the black wire leading to the blower motor. Now, you can by a new plug & pigtail from...
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