Power Window Module Wiring - the12volt Power Window Module Wiring - I've just installed keyless-entry and an alarm system in my car ( remote-starter almost done ), one of the pending items that i had purchased for this installation was a power window open/close module. I've found the power window harness near the driver's kick panel, her Common Electric Window Regulator Problems & Solutions Window regulators are the mechanisms inside your car door that allow you to open and close your windows. Most modern cars have electric windows which are operated using a switch. The window regulators and motors that power them can become worn or damaged over time.