ta1drman

I am attempting to identify which wire(s) in the LX470 tie into the radio system. I augmented the LX with a blue tooth for streaming music. The microphone on the bluetooth is marginal in quality--the mic(s) in the LX470 are great--I am trying to tie into them but can't find a diagram. Lexus dealer didn't have a diagram. I own the 2007 service manuals but do not have the wiring diagram manual.