hi all, my first attempt at posting anything on any forum, any help appreciated. the l/h rear window on my 1999 est. goes down but not up, i have removed the motor and it checks out ok, the live wires to the motor are ok and reverse polarity when switched up and down, the only fault that seems to be there, is that the earth seems to dissapear when the switch is operated to the up position, is there a control unit somewhere?? and where is the wiring loom routed from the l/h rear door.?? any help appreciated.