Have a 2009 hyundai sonata have a system wanting installed in it has factory stereo with xm radio which will not be changed mainly need wiring done to amp it does not have rear dash speakers will have to run inputs from either front or rear door speaker wiring with either an adapter for rca or can use amps high power inputs have 1500 watt amp so will need either a 1 gauge or 0 gauge power wire ...read more