open circuits f y i
remember an ohm volt meter cost $12.00 dollars. they are a must when working on electrical..anyway take out rear seat again to access the" breaker"on the floor panel inside the motor area (in the series circuit) , the one that would be from the actual motor ( wire harness) at the window in question area ...attached to the motor from the b a t . side of(that )breaker and has the other terminal from breaker from it going to the the sheet metal "ground ", that breaker could be"open" meaning "off" tripped , no go , etc. or d i r t y sheet metal screw!!!mine was.. not actually grounded. so current goes from switch to motor to breaker to ground thru that breaker and if there is corrosion or an unfortunately shorted motor keeping breaker open then the motor can't reach ground and no MOTOR motion would happen...or disconnect that breaker from the motor with a 11/32 open end tiny wrench or is it a 3/8 wrench , not sure but anyway put your meter to the o h m scale after disconnecting the motor from breaker and put one test lead to a good clean metal ground and the other lead to the bat terminal that had the motor wire on it before test. you should see the meter change reading meaning the breaker is good to ground (if not go get a new one at local parts store) or .. so then spray the rocker switch for that window( down insides witches area ) with radio shacks contact aerosol cleaner re-connect the motor to (bat.) terminal and turn key to (acc.) and test windows . Is the bad window still not working?? un- plug wires from motor.. test leads from meter to leads you should see meter changes at (ohm scale) ,how about from motor leads to (ground metal) on motor? there should not be any meter changes from motor wires to metal of motor. anyway loose breaker /dirty switches was my only problem . don't forget to view my recent new input to the forum about brightening up rear lites on your 30 amp. charging rated existing system.my occupation was santa ana school district fleet vehicle electrician , calif. now in tenn. retired with multi upgraded electrical system a dual battery '58 bird 24k invested so far..