Ok well he dosent have any room in his Blazer to put another battery. If we had enough money to buy cable i could possibly put another battery in the back, hook it up to the altinator as well (he has a better one than stock) and then just use a short cable to hook the amp up to the battery. Yet again, we dont have enough money to buy that much 12g cable. Any other ideas? I guess its a given to run with 12g cable, but wheres a good place to hook it up and do i need a crossover.