I hooked up these 2 subs to my friends car, a toyota cressida, theres a kenwood 70x2 amp and 2 cerwin vega subs, now, his battery has died 2 times in the past like 2 days, i have a feeling it is the system, but he always has the car running when he plays the radio, so i dont know, is it the wiring?

 

You may check the remote wire on the amp. If you don't a switched power supply (connected to the ignition) then the amp may be staying on even when the car is turned off. You can use a DMM to check to see if you still have 12V on the line when the car is off.

 

thank you, i'm sure thats the problem cause i was hesitant about witch wire to connect that one too because i've never done this before