my name is cody and i am a total newbie here, although i have lurked for a while. i own an 82 911 sc and i have a battery drain problem that has plagued me since the day i bought it. (2003) anyway, no one can seem to find the source, but after 2 days, battery is dead. it does have a radar detector mounted under the car that is hardwired in, but i dont know if that is the problem. it was professionally installed, so i would hope that they knew better. anyway, i bought a kill switch/key that i want to install that goes directly to the battery. what gauge wire do i need? (im not a mechanic, but handy enough to install this.... i think) the battery is a interstate megatron plus. any advice/help would be glady appreciated. thanks!