Need Help ASAP.

Wuz up guys

I just got my car back and I got a new clutch, intake, downpipe, Greddy turbo timer and boost controller, boost gauge and air/fuel gauge. And 2 nights ago my turbo timer was on and I forgot to turn off my lights. so the light was on all night and my battery died and I jump start my car on that day and everything was ok then the next morning when i turned my car on the SRS light came on. I think is the airbag light. I was going to see if anybody nows what can make that thing go on. Do u guys think i burn a fues and if i did is there a fues for airbags.

Also what should you do next to my car to give me the most hp for the buck and be safe. my car is on 14psi right now.

Thanks.

unplug the battery power wire, then hook it back up.

but why would it come on?

Just for spite.