Just returned from a 6 month deployment to my car not starting, expected since I didn't disconnect the battery. I got a new battery and it started, but then wouldn't start again after turning it off, I got it jumped and started driving around and had all sorts of problems, all the lights would turn on, the speedometer and tachometer would drop quickly to 0 and then come back up to normal, and would jerk the car, as if the car died and came back on while I'm driving, I have a good video of the problem that I just uploaded on YouTube. I quickly turned around to go home and when I turned the vehicle off it wouldn't turn on again, even though it's a fresh battery. I'm thinking the problem could be with the alternator? It only had a very small amount of gas before I left for deployment and I filled up a full tank of fresh gas.
Please help, I really need my car to work asap!
Here's the link depicting the problem: