I had a guy from JL Audio tell me not to put a cap or an extra battery in the trunk cause all that will do is require more power to charge them and not give the amps the required voltage they need. He said to just get a Better battery and a bigger alternator! He said to run a 1/0 Awg wire to the trunk and put a distibution block there and then run 2 1/0 Awg wires to the amps! One more question! What would you guys recommend? 2 T1 12's or 2 JL Audio 12W7