OK, My new Empeg Mk2 is coming in Tuesday.. Is it easy or even possible to use just the main head unit (move it to the bottom DIN) AND the Empeg in the top DIN w/o running into interference issues? Like what happens if they're both on at the same time? Do I just use an RCA Y coupler? Or is there some better way I don't know about? My current Head is the standard stock Ford Tape deck/w seperate CD player. I don't care about the CD, but I WOULD like radio on occasion. And since the Empeg tuner modules are no longer in stock, well....