White05GT

How old is your battery? Mustangs are notorious for acting like they are demon possessed when the battery gets ready to drop dead.

Anyplace that sells batteries can check it free for you. Let us know what the issue turns out to be.

Might want to get the alternator tested at the same time also.

Nuke

Baffling. If the charging system and SJB are ruled out, I think I'd start troubleshooting by having something in the car tied into the rear light circuit (buzzer, lamp) so I could have indication of when the lights erroneously came on and to see if there was any action on my part that would prompt them such as clutch pedal motion, shifter motion, etc.. I suppose I'd be looking for an intermittent short circuit.

Mr.Ski

Take it to someone (probably dealer) that can pull codes for the ABS system. The PCM and ABS and RCM (restraint control module) work toegether for your traction control. Without pulling codes you are just hunting in the dark. You most likely have an intermittent sensor fault.

SteveDwsn

I agree with White05GT, check the battery. Check the voltage regulator too. Sorry you are having electrical issues, but at least I know mine isn't the only one with an annoying gremlin.

GTgirlCA

Thanks for the link, Nuke. Great to have on hand.

Nuke

Me or the link?

NP. We're all here to help one another.