yov6cam

I aheva 4ch amp, but I need to hook up the front speakers. I don't need an xover to get all of them, just the door panel ones. I do need to get to the high input wires to connect with the amp. I don't want to open up the radio if I don't have to, is it soemwhere easier to access? After that, I'm just gonna run speaker wires from my trunk to the front. Any help will be greatly appreciated.