I'm having window issues and thought it was the master switch so I just replaced it with a brand new one and no difference. The master will control the drivers, passenger and passenger rear. The others won't work from their doors. I checked wires in drivers rear door as nothing worked in it. Every wire but one was broke so I fixed them all which fixed the speaker and door lock. But so no window. I checked the wires in the other doors and none broke. I'm not sure what to check next.