I already asked this question over on hidplanet but I figured you guys might be able to offer a little more insight on the specific capabilities of our cars (mine being a 2007 2.2l).

I'm doing a quad retrofit setup at 50w in my cobalt within the next month. I already have a 35w ddm kit in my fogs, so if I throw two 50w kits on top of that will I have to worry about draining the battery to fast for the alternator to keep up with?

 

no, no, your using about the same power as regular lights.

 

just make sure u run 2 relay harnesses up top

 

Yeah I intend to have 1 relay for each set of ballasts.

 

^This.

No worries with too much draw, I've had my HID's on for extended periods of time with the car off, and my previous car had HID's and a 1000W amp and a dinky alternator and did fine for itself.

 

Good to hear, thanks for the help.