Where can I find one?

 

Rock Auto has rebuilt units but they are expensive at $276 plus core charge. Try ebay or see if a local recycle yard has an X300 (assuming thats what you have). You might find all 4 there for cheap. We don't hear about them failing very often.

 

Car-part.com
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You can take the one you have and run it fwd and back with a battery charger

Just flip wire connection to run other way

This even works on car , just pull the 2 heavy wires out at the fwd of the door panel and clip

This will be high current so arcing hazard , the motor has resistance so not a direct short of the charger

Put the charger on 10 amp setting and not lower to run properly but you can use the lower than to practice the connection to be made

There is a thing of the charger being higher voltage than a fully charged battery ( 12.75 ) which does give the motor more electromotive force to move an otherwise not moving motor on regular battery / alternator voltage 13.5 - 14.5 )

There is a procedure on final installation of the motor that the controller knows full up

on full up window position continue to hold button up for a few seconds

Worked for me

Regulator lubing ?

When you put connector back on the door controller , ensure the pins lock in place as this was my issue of motor not running , motor was just fine so first step

The pins migrate away from connection