Well I don't have a system. I have 4 Alpine speakers that replace my stock speakers. I have a JVC Kameleon head unit. My stock amp is broken and my speakers are all running off the left side of my amp. I am retarded when it comes to wireing. I called best buy and they want $50 for the install and $80 for the wiring harness. GAY! I'm in the St. Pete area by the way. Oh and the previous owner did have a system and all the wiring is still in my engine and trunk. If whoever installs my amp can take all that shit out that would be great.