NEED HELP ASAP!! Alarm keeps going off, car won't start.

[AceWynn]

Hey guys,

I'm having some serious trouble with my x5 now. I'll start form the beginning.

I started a new project on my X5 and what I wanted to do was to install an aftermarket amp with subs. I wired my RCA and remote wire from the back of the x5 to the front with no problems at all. I then wired up my amp. I connected the power to the battery with no troubles at all. I connected the ground to one of the sides and realized it wasn't a strong connection, so I found another one that was being by the x5. The location of the ground is on the factory amp side behind one of the panels.

So now, I went to wire the remote and everything seemed to go wrong at this point. I accidentally turn on my car with my automatic start right before this, so I know my car started before all of this. I was able to get the remote wire hooked up and my amp was turning on but I didn't get any sound from my speakers. I tried to start my car and nothing happened. The car wouldn't even turn over. My friend told me that I might have set off the immobilizer. Then something interesting happened. My car's alarm kept going off every couple mins. Right now, it seemed like the battery is dead so the alarm stopped going off but I don't have access to the battery since I can't unlock any of my doors.

I need some major help guys! Sorry if the story is long and confusing. Please help!