It is a feast to see Jim's work. Thanks Thaumaturge for the link. However, I don't have the Nav, so I don't have that tuner that Jim uses to get his pre-amp signal. Does it mean that I have to tape into the tape deck unit in the console. I already look at the connector on this deck and it is missing the pin-outs for the rear channels. My guess is that I have to tape into the deck and run the wires from the console back to the trunk to connect to the ADS amp. (yes, I plan to use the ADS 850mx to drive the system). Let me know what you think ...