Join Date: Mar 2013
Location: Foresthill CA
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1) remove door panel
2) disconnect the window motor connector
3) Using a portable 12v battery source, jump box etc, connect the the motor. if it goes up, reverse the connection, if it goes down, test you switch with an ohm meter. If switch is bad, replace. If switch is good, test all connectors and then continue back looking for short.
Most likely a bad switch.
I used this method to power the motor in a junk yard to pull glass. Worked great.
1997 F-350 XLT Lariat Crewcab long box 4x4. Oxford white with an ugly green. 133xxx miles. Hide away goose neck, banks turbo, exhaust, inner cooler, intake filter and gauges.