Hooking up 2 JL W7s having power issues?

[eclipseracergst]

i just got two jl W7s w. a power acustik amp capacitor and the guy i got them from wasnt sure how the power wires were ran into the capacitor.. Im not sure what kinda of Cap. it is but its a big one...it has a positive INPUT and positive output, Same w. GROUND....the problem im having is that most caps. ive ever hooked up you run power from batt. to positive on cap then from that positive to the amp and same w. the ground...well i am confused w. this CAP because it has two big ports for positive and neg. and they say input above them then there is 3 smaller ports for both ground and power that say output on them...should i run my power from batt. to the big one that says input then run another wire off the output port to my amp and same w. ground or should i keep both wires on the same port like you would with a smaller cap.???? the reason im asking all this is because when i hooked everything up my car was instantly dead. after i got it jumped and running for about ten min i shut it off and tried to start again like 3 seconds later and it was dead again??? i know this is a lot of power and its all inside a Acura Integra so should i go w. a bigger batt. and Alternator or do i have my CAP. hooked up wrong or maybe a bad ground somewhere??? FYI i got the system to work w. the cap and amp and everything on so i dont think the cap is hooked up wrong i just wanna double check just really wanna figure out why my batt keeps dieing SOO fast this didnt happen about 6 months ago when i had two 15s in there...also the CAP says 11.2V when the car is running...i know thats low....someone whos hooked up one of these monster amp CAPS before please help me out i cant keep jumping my car everywhere i go