You would need a line driver. It will tap the output for speakers to grab signal for rca's to run to your amp. You can get one at one of your local audio shops. And of course and amp wiring kit for power and ground. You will also have to go to the fusebox or the radio for a switched 12v wire to turn the amp on and off with the ignition. usually you can grab for remote behind the radio or at the ignition harness. Just be sure to fuse this wire.