Replacement powerwindow motor can be sourced from Nissan Dealer ( new $450 or 2nd hand one from EBay $99 ).
Tips and tricks before going out and getting a power window motor.
If your window is stuck halfway and not fully up, Take the door trim off and hit the power window motor with a hammer or screwdriver to losen the brushes. This will temporary work to allow you to close your window.
If you have access to a relay from a similar car ( skyline, s13 silvia, GTR ) you can test the relay.
Last test to do, is to applie power directly to the power window motor. Unclip the connector and apply direct 12v to the motor. You can use a 12v car jumper battery pack.
Taking the Trim off
To take the Trim off, pop the plastic trim where the door leaver is out can use a screwdriver.
Undo the screw in the door handle and pull the powerwindow control out
Undo the 3 screew and then pull carefully until the clips pop out.
Once it is off, carefully take the plastic sheet off and then tape the window to the door so that it will not drop. You will also need to take out the speaker for accessing the Power window motor.
Now the fun part, you will have to feel around for where the screws holding the power window motor in. Be carefull not to round the screws or you are screwed.
You can take out the screws with a stubby screwdriver or the funny shaped screw driver that looks like to "L" stuck together or an L shape screw driver for more leverage.
It may take a bit of effort to take the power window motor out. Three screws hold the motor on the inside and two screws hold it on on the outside.
Finally the motor is out. To install the replacement motor, do the reverse.
If anyone can tell me where I can source the brushes inside that brush against the armature, I would be greatly appreciated. I will then be able to show you how to recondition the powerwindow motor.
Then main cause of the powerwindow motor burning out in this case was that the powerwindow button was faulty on closer inspection. Symtopns were if your power window button does not centre after closing/opening driver side window and you continue to hear the motor wind once the window has fully closed/open. The replacement motor died same sameway within 3 months.