I ordered a Clarion dxz715 cd player for my 88' 735il. I was just wondering how i would have the front and rear fader hook up to the new CD player. Should I just have it be a dead switch and have the cd player control the fader or should i keep the fader switch still operating and have the control on the cd player not work. I know many of you have probably installed cd players into your 7 series how did you do it? Thanks for any help that you can give me.