Just got bought another Cobra and the first night I got it the driver side window started to die. It would only move in the middle of the range unless you helped it with your hand. Next day it quit completely. I figured it was the motor but today I pulled the motor and it ran fine off a twelve volt battery. Then I check the switch but that operated the pass side so its not that. I just checked the harness that the motor plugs into with a tester and there is no power. All the wiring behind the switches seems fine too. What gives?