is this still for powering the remote on the amp? to wire the POWER on the amp you need to run to battery through firewall and there should be a plug you can remove underneath the driver door.. make sure to fuse it too! as far as remote wire.. you can just wire it to anything behind the radio (i can't think of anything else closer to the amp than the dome light...) and have the switch in line... make sure the switch doesn't stay on when he turns off the car!