my power window is stuck part way open. The center console switches are brand new so I don't think thats the problem. The old switches were kinda cruddy and cleaning them did not help so I replaced them.

I removed the door panel but don't know how to trouble shoot further.

There are too wires coming from the motor and attached to the door shell, GREEN and BLACK. I'm assuming these are the power wires to the motor. Since there are only two wires I assume one is positive and one is negative and then they reverse polarity when the switch is operated in the opposite position.

Is this a correct assumption? How do I test the motor and or wiring? Should there be continuity on an OHM meter between the two wires if the motor is good? Should there only be 12 volt power present when the window switch is pressed, and then only power to one or the other of the wires depending on which way the switch is pressed?

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1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5