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Is it blowing the fuse straight away or after a while,my point being that it will be electrical or mechanical (in that order).
Trace the wiring back and check for the positive side grounding to the body if the fuse blows straight away.
Check the window tracks/guides for binding ,remove drive unit and see if it works without the window weight,the motors carbon up inside with dust from the brushes,the motor can be cleaned and the comutator polished.
You could open up the opposite side door and check the wiring against your troublesome one
Good luck.
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