^^ Began with 20v to Window Down wire connector.Couple months pass and today I again used a 20v tool battery (again fully charged) on the motor quickly switching polarity probably ten times without the motor responding.
There must be a circuit breaker or equivalent in the harness ground side somewhere. Or the windows also use the seat motor circuit breaker.I'm wondering why disconnecting the harness at the door frame made it work.
YMMV

