Rep Power: 286

Two months ago i took my car to the shop cuz i was in an accident. I got it back, and about a week later my head unit would sometimes cut out when i would go over a bump. I figured that i had a short somewhere, so i didnt look at it right then. Then one day my car wouldnt start. The starter worked but it seemed like i had no spark.
So i opened up my hood and what do i see. My positive battery cable is disconnected, and there is no battery tray. The battery was being held by the power cables, and the positive was just tapping the terminal. I connected them and zip -tied my battery down.
Now my car does the head unit cut off, the crappy starts, AND all of my lights flicker on and off while im driving, the abs light comes on and then the brake pedal pulses, and to top it all off, yesterday , while i was with a girl i JUST met, my car cuts off while im driving.
What do you guys think? Im taking it to the dealer to see what the exact problem is. And i'm going to see what i can do to get the shop to pay for it.

 
Rep Power: 453

Sounds like a loose ground somewhere. One loose ground can cause alot of issues throughout the rest of the car. I would first check the connections again at the battery.

then go to the area where you had the accident and check any grounds in that area. Sounds like one is loose.

 
Rep Power: 314

my hu stops for a sec if i hit a huge bump or something, but i think thats normal. theres only like on huge bump that it happens, besides that, little bumps do nothing