What system is that? What happened?
First the top would not go back. A couple of hours later the dials went crazy and the radio quit. Moments later it started sputtering then quit completely. Fuses look good. Can't even jump it off. Just dead.
Your battery may be bad and the alternator is also suspect. I would have both tested and I would also clean and tighten the battery cable ends and battery terminals.
I've even put a new battery on it. Still no luck. I was wondering about the computer.
Looking for a Used Mustang in your area?
CarGurus has 40,193 nationwide Mustang listings starting at $1,312.
Search Ford Mustang Questions
Ford Mustang Experts