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So, if anyone knows me well enough by now, I always have some stupid project going...haha, it was about time the wife's car got a dose of it. Background - It bugged the heck out of me to know that there was a version of the car out there that had factory navigation. I also despise the suction mount portable navigation units. Sure they've got many features like traffic warning and bluetooth,etc. but the fact is, they're an eyesore and you have to mess with cables/etc. while aftermarket stereo/nav units look like an after-though and just don't fit in ... OEM navigation unit just fits right and looks the part while doing it I tried keeping a photo journal of it all but failed to do it once I really got into it, lol ... so you'll get little tids and bits and a few apologies Kept searching the forums and found the screen, dvd drive and a few parts for a decent price... Next I started collecting all the other stuff I needed like harnesses, connectors and the antenna. Here's the list thanks to a few people who have successfully done this mod. 1. GPS Antenna - 86277AG12A 2. Navi Screen - 86281AG12A 3. DVD Drive - 86271AG04A 4. DVD Drive/GPS Antenna cord Drive/Navi Screen - 86273AG00A 5. DVD Drive 10 pin connector Harness(Kenwood Site only) - E30-4964-05 6. Tyco 16 pin connector(rear of Navi Screen) - 174147-2 7. Tyco 20 pin connector(rear of Navi Screen) - 174047-2 8. NAVI DVD Some pics. Back of the radio/XM unit... Back of the screen... Notes: The 4-pin Molex connector is used for a reverse camera, while the yellow AUX input is for an external video source ... more on this later. Back of the DVD drive... Notes: I've found that the green 3.5mm jack is for voice activated commands with an optional mic/button kit, while the square green connector is the GPS antenna. All the wires at the radio harness... Then, it was time to research wiring the whole thing up! Since the car didn't come with NAVI, there's no harness for it ... I'm lucky it was a "Limited" model that had the upgraded stereo to accept most of the wires and sound signals ... so a harness had to be built from scratch and everything had to be tapped into existing connectors. There's a lot of information out there, but some of them were conflicting and not very clear ... as an engineer, I wanted everything down on paper before I started ... so I whittled all the information down to the following diagram. This also includes a Parking Brake signal hack modification to trick the system into thinking it's parked so it'll allow you to input addresses/etc. and play AUX video while on the move. The reverse camera option is activated only when the system detects a signal from the camera and overrides any other image/mode on the screen. Power the camera off of the reverse light and you're in business! ... more about the install in the next post ...