[hamalibuha]

I have a 2002 Malibu LS, and im trying to install a subwoofer amplifier. Everything is set up except a remote wire. where can I get the remote wire for the amplifier? (i checked the voltage from the wires of the back of the stereo, but i can't find any wire that shows 12V+ when radio is turned on)

please feel free to reply. thanks