you got the SVC tantrum 12 right? anything bigger 16awg or bigger will work. im sure any stereo shop will sell wire by the foot. you can use the same wire you ran from the amp to the sub box inside the box.
my ex-girlfriend said "its car audio or me"
i've had tougher choices at a soda machine...
I soldered on the guage wire from the subwoofer to the enclosure. Out the back there are two gold inputs. I assume these two inputs are the ones that connect to the amp?