What parts do i need for the early one?
bought it without any cables. Just the nav. It was flashed wrong to the latest update. I reinstalled it, and it works.
Bought a GPS for 15 Euro (just a generic one, with good reviews and the right connector). I also bought a time delayer for 5 seconds (for what you get, expensive, 25 euro). You need the surround for the connect nav, as it is bigger than a radio.
The GPS can be mounted above the radio, invisible, under the air vents.
Just make sure you wire it al right up. You need a ignition +/-12V cable, you can get from the sigarette lighter and a permanent +12V, you can get at the place were the OBD connector is. Make sure you have a fuse between it. I added extended connectors, So I didn't have to cut the original wiring. Make sure you do everything with solder/tinner and heatshrink (:?).
With a little knowledge of installing radio's in cars you can easily do it.
Just almost forgot it: you can install a microphone. You need a white adaptor on the back of the satnav, you can also get from a 147/156. Wire it up to the microphone and it works. Make sure you check if the microphone is already in place. I bought one, and there was one already mounted.