Battery almost dead after HU install?????????

[casketcrewchick]

Alright... so today I was installing my new alpine 9855 and it had the doors open for most of the day and just now i had it on for about an hour while installing my new seatcovers... I cant get any sound from the subs at all. WTF. What happened with that was one day I drove to work and everything was fine... then i went out for lunch to listen to my radio and my subs were out. If anyone knows whats up with that lemme know, but right now i am wondering maybe i connected the wrong wires or something and killed my battery (even though they are color coded and i have installed about 4 HU before with no problems).

I hope my alternator isnt dying or whatever. I have an Energizer battery i got from Pep Boys last year. lol BTW i am charging my battery right now and i jump started it and then turned it off and on and it worked but it was just above yellow on the gauge. thanks.

[3.4 slow to go]

did the subs work after the car ws jumped?
Did the subs work after you finished the hu install?
are all the fuses involved still good?

edit: this'll probably be moved to stereo/electronics forum