Hi! This is my first post... I would like to install an after-market phone car kit in my 04 Prius with JBL and run the kit over the dash-board speaker. My Toyota dealer told me that this was not possible. True? He told me it would crash the car systems. I can mute the amp, I think, but how can I connect the car kit to the speaker? The car kit comes with line output and ISO cable. Thanks! Thomas
