I have a 2004 Mercury Grand Marquis. Recently developed an electrical issue. The power windows and speakers are not working. The dome light still works, but it does not come on automatically when the car door opens. I also have an airbag light that is currently on. We are unable to find where this issue is coming from. The car put out two error codes on the scan, P14614 and P1000, but neither of them seem to be related to this issue. We have also tested every fuse/relay related to either sound or DDM. The door locks on the car still work, the window switches all around are not working. Not sure where to take this issue at this point. Evertyhing else on the car seems to be working just fine, except the systems I mentioned

 

Depending on how determined you are, might be a good idea to look for a possible broken wire(s) in the driver;s door hinge area.