just go to your nearest audio store, and get a converter for like 20 bucks. its real simple. because i have my sub hooked up to my jbl stock face because it all matches and stuff. just go to your nearest store and ask them. people wont shoot you or anything. but it should only cost you 20 bucks if they try to charge you more then go somewhere else.
*2003 Black GT-S 6speed* TRD body kit, HID upgrade, clear corners, Matrix XRS shift knob, 02 tails, trd exhaust, AEM gen 2 CAI, TWM short shifter.