Be aware this is a LONG post, with lots of photos, not good for dial up users...
Some of you might have been interested (or bored :) ) with my recent posts regarding my OEM Sat Nav installation.
Originally from the factory my car had a VW Gamma Head Unit and the VW dash mounted 6 CD player. After seeing Benc's excellent post regarding glove box installation of the 6CD ( http://uk-mkivs.net/forums/thread/645627.aspx ), I decided I had to attempt this myself, at the same time as fitting the Sat Nav unit.
So after some fun I've installed the OEM VW MFD version G unit and I've also installed the 6 CD player in to the glovebox.
I took lots of pictures and whilst this wasn't mean't to be a step by step guide to the installation it sort of turned in to one!
The parts I used in this installation were -
Extension Cable for in dash changer:
http://www.bluespot.co.uk/stock/idc_cable.asp PRICE: £17.99
Single DIN Mounting Kit:
http://www.bluespot.co.uk/stock/din_box.asp PRICE: £17.99
6CD player (I already had one in my car)
Ebay or off this forum in the classifieds PRICE: £100 total guess!
OEM VW MFD Sat Nav version G:
Ebay or off this forum in the classifieds PRICE: £240-£340 approx
VW/Audi Sat Nav plug and play cable/antenna kit (contains Nav loom/antenna/removal keys)
Ebay seller - "Navis-and-more" PRICE : £33.00
other misc parts -
zip ties, self adhesive cable tie base, suitable wire to extend the illumination wire for the 6CD.
tools -
stanley knife(good strong one)/spare blades (to cut the back of the glovebox), screw driver (to screw the DIN cage in to the glovebox), cutters (to clip zip ties/cut cables), removal keys (to pull out the Gamma/6CD), Torx driver set (to undo the screws to pull release the glovebox so the GPS Antenna can be mounted behind it), soldering iron/solder/heatshrink (to solder the some wires that needed to be extended)
So heres my guide to doing this installation/conversion. Don't fall asleep :)
1) My original set up, as it came from the factory

2) The glovebox - note you can see the marks near the lamp, these are already made from the factory and are stress points which are helpful for cutting a hole at the back.

3) I mated up the single DIN tray to the glovebox to see where the hole needs to be cut. The hole needs to be cut as the DIN tray/CD player need to be mounted right at the back of the glovebox to allow the lid to close (and to give a little more space in there too.)

4) After a real battle I had the hole cut at the back of the din tray, which allowed it to push back and be flush with the log book holder. (this took time and perseverance!)

5) The Sat Nav loom has an "eliminator" switch on it which basically allows a video input to be watched on the Nav whilst driving (normally this is disabled for safety). I attached this to the side of the DIN tray using a adhesive base that allows a zip tie to pass through it.


6) DIN tray slid in to place with the eliminator button attached

7) Goodbye to the Gamma head unit and the 6 CD player starts its journey to its new home in the glovebox

8) The rear of 6 CD player. This has a 'hardwired' connector (as shown below on the left) and a snap in connector on the right. The hardwired connector is a multi pin unit and this normally links in to the Gamma unit. When the 6 CD player is moved to the glovebox the cable won't reach to the rear of the MFD Sat Nav, so the extender cable has to be used. The snap-in connector on the right (I believe) is for the illumination also is quite short and will never reach in to the glove box. I had to cut this off and extend it using a piece of similar thickness wire, solder it and then insulate it using heatshrink tubing.

8a) Here is the snap in connector for illumination on the 6 CD player cut off and ready for soldering on to the extender cable

9) I decided it would be a good time to actually test the MFD unit. If it was faulty it would be a waste of time to continue. I plugged all the loom in to the rear of the MFD and layed the GPS aerial on the dashboard to get a signal. It picked up 7 satellites and the radio was fine too.
NB the Sat Nav Loom I used had 2 bare wires marked as "Gala H" and "Gala L". These cables are only used if the car has a full FIS cluster, they pass information from the MFD to the cluster and it displays route information etc. For a normal car with half height FIS or no FIS these wires can be zip-tied up and ignored.

10) Now I needed to get the GPS aerial INSIDE the dashboard. The most favoured position is on the left of the dashboard, basically quite close to the tax disc. Around this area is a thick metal bar (for body strength?), I fixed the GPS aerial there. To get my hand in I had to undo all the glovebox screws and let it hang down plus I had to take the side panel off. This also helped me to feed the GPS connector along the dashboard to the back of the MFD

10a) Side panel removed feeding the GPS Antenna in

10b) I zip-tied the excess GPS cable and mounted it securely on a metal fin. At upper left of the photo below you can see the thick metal bar, this is where the GPS antenna is mounted to.

11) I pulled the extended DIN cable through and the extended snap in power connector through ready for fitting the din tray. Also at this point I pulled through the eliminator cable through from the Sat Nav loom (not seen on the photograph though) to connect to the back of the blue switch

12) This photo shows the 6CD nearly finished (not fully pushed back in to the DIN tray in case of any problem) and all Sat Nav loom/cabling all pulled through ready for connection. At this point I again tested the Sat Nav before commiting myself to pushing it in to its final position.NB the cabling is clearly quite chunky and caution has to be used to make sure it doesn't foul when pushing the MFD in to its final position. A lot of the excess cable can be pushed in to the large-ish space behind the climate control panel.

13) Sat Nav unit now mounted and playing CDs from the 6CD player in the glove box :) Result!

14) 6CD player mounted in the glove box and working

14a) Unit in operation at night time

14b) CD player view - notice that it displays the play time in minutes/seconds on a CD - something the Gamma didn't do!

14c) As part of the install I made sure my Nokia car kit worked with the MFD (muting the CD player/radio when in use), on this pic the phone is active, along with navigation and CD (muted!).

As I said before I want to thank BenC for his excellent guide on the 6CD glovebox conversion and for other help he gave me with some questions I had!