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Q: Car electric system dies while driving, eventually losing power in entire car. on 2005 Ford Mustang

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Hello,

I have a 2005 Mustang (6-Cylinder). It has been very well taken care of and never had any issues, I am the first owner of this car and nobody else has driven it. A little background, I first started having a slight issue this year (not bad for a car almost ten years old) with the alternator and the gas/speedometer censors. After a LARGE bill to completely replace the instrument cluster and the alternator...everything was fine. I decided to go through with a minor upgrade and have an AUX jack installed so I could link my iPhone with my radio (this was about two weeks after the alternator/instrument cluster repair). $200 spent, nice new shiny AUX jack installed...all was well. I was driving the car home down the highway in the middle of the night about a week after the AUX jack was installed and suddenly my radio completely went dead in the car...then the headlights started dimming...I was on the worst part of the highway, no street lights and crazy traffic...so I pulled off the nearest exit where the car finally died. I sat in the pitch black for a couple hours waiting on a tow truck to come get me (in the middle of nowhere in Northern California wilderness). As I was sitting there the hazard lights died to where there was absolutely no way of warning other motorists that I was there. Anyways, back to the point.

Now the Mustang has been sitting in my garage unable to get it started. We charge the battery over night and it will start but the same sequence of events happens if we drive it up the street.

My question is...what is it? Is it the battery..did they give us a bad alternator...was the AUX input jack installed incorrectly...who should I contact about this issue? I am a woman, so it helps to have a slight bit of knowledge going into these issues as I have had scare tactics used on me before. I just want whoever screwed my car up to fix what is wrong with it so I can drive it again as it is putting quite the damper on my work and school.

Thank you in advance for any advice you have!
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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I would have the charging system checked it sounds like you have a bad alternator ...it wouldnt be the first time that has happened...when checking charging system make sure you are getting power to the alternator
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Did you ever figure out what the problem is? I'm having a similar one where the alternator is not charging the battery while driving and not long after driving the abs and traction control lights come on and eventually the car dies in flight. They checked the charging system and said it wasn't that.
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