2012 Ford Mustang Tail Lights do not work.

Check to see if you blew a fuse fuse 22 in smart junction box in kick panel then have it scanned as it may be a body module problem.

Check to see if any wire has been tapped into for something like an alarm and or other accessory if you do see that see where it goes. Normally it will be under the dash or along the inside of car, maybe trunk. Then if you don't see anything you'll need apro scan it to see if it's the body module which I kind of doubt. It may be a abad bulb as well which means check ing all of them in the rear as well as front also check the ground wire at center of trunk.

One other thing I forgot is if this has ever beenin accident then check those areas as body shopps do a terrible job of wiring fixes, they just twist together stuff, don't tape it etc. Also look under hood and trunk areas for boken wires as that is where they break the most unless this car has been put together by two cars then you have to pullup carpeting etc. For bulbs just pull them out one at a time an dif you see black on them then they are probably bad you don' t even need to take them out of the socket. I don't think that is your problem however. I stil think you need to get a pro to scan it as it m ay be a body module problem as well.

It may have been hit there or bumped to cause that. Best place to check is where wiring goes through to bumper. It may also be your side lights or wiring going to those check there as you don'thave to pull the bumper fascia off.

Sounds like a body shop job to me that is typical. Make it look pretty who the hell cares how it works.