Just for Elaine... here is the audio hook-up DIY for the TVandNav2Go module:
Tools needed:
BMW Screwdriver
Wire cutter/stripper
Soldering iron/solder (optional, but recommended)
Materials needed:
Electrical tape
Stereo Mini-jack extension cable (I got one at Radio Shack)
Stereo Mini-plug to Stereo RCA cable (also at Radio Shack)
1. Open the armrest storage compartment and pry between the plastic panels to pop off the center console/rear vent panel.
2. Close the storage compartment and gently pull on the panel from the top down. The bottom is hooked in by the side flaps of the center console --push outwards at the bottom and pull steadily to completely remove the panel.
3. With the panel off, the AUX audio connector is now exposed. This is where we'll be making our connection.
4. Take the Stereo mini-jack extension cable and cut off the male plug end.
5. Strip off the outer sleeve and the inner shielding to expose the 3 wires --Left (red), Right (black), and common ground (silver uninsulated wire).
6. Splice into the 3 wires of the AUX audio connector. From the top down, RED to the BLACK (left), BLACK to the YELLOW (right), and SILVER to the other BLACK (common ground).
If you buy a different mini-jack extension cable, it will be different, and you'll have to figure out which wire is which.
7. Now run the white mini-jack extension cable toward the glove box along the passenger side of the center console (just stuff it under the plastic trim), and connect the female end to the mini-plug of the stereo mini to RCA cable.
8. Finally, connect the stereo RCA's to the audio out of the TVandNav2Go module.
Now the aux audio input for the module is totally invisible while retaining your stock aux input.. The only problem with two devices plugged into the same aux source is that if both devices are on, it will cause reduced sound quality even if one device is not playing any audio at all. The RIGHT way to do this is to put a switch in between the two sources... BUT if you just remember to turn off your ipod (or unplug it) when you're using the module, or turn off your module when you're using your ipod, then it should be fine... not bad at all for a cheap hack.