Hi ,ccf1
I have search the forum and found this :-
2002 and newer Radio Module - w/Nav

Pin No. / Wire Color / Function
Large Black Plug x18126

1 / Blue-Black / Right Rear + output to amp (twisted with 5)
2 / Blue-Red / Right Front + output to amp (twisted with 6)
3 / Yellow-Red / Left Front + output to amp (twisted with 7)
4 / Yellow-Black / Left Rear + output to amp (twisted with 8)
5 / Blue-Black / Right Rear + output to amp (twisted with 1)
6 / Blue-Red / Right Front + output to amp (twisted with 2)
7 / Yellow-Red / Left Front + output to amp (twisted with 3)
8 / Yellow-Black / Left Rear + output to amp (twisted with 4)
9 / White-Yellow bands / I-bus?
10 / White-Brown / Mute from phone?
11 / White-Green / ?
12 / Brown / Ground
13 / White / Remote on-off to amp
14 / Grey-Red / Dash illumination (dimmer)
15 / Red-Green / +12v from battery (not switched)
16 / Violet-White / +12v from ignition (ACC and RUN)

small white plug x13598
Pin No. / Wire Color / Function
1 / / No function
2 / White-Brown / Audio common from 6CD player
3-7 / / No connection
8 / White-Red / Audio Left Channel from 6CD player
9 / White-Blue / Audio Right Channel from 6CD player
10 / / No Connection
11 / NAV / TV Audio +
12 / NAV / TV Audio -

NEW Small black plug: x13649 plug
Pin No. / Wire Color / Function
1 / Tape left +
2 / Tape left -
3 / Left Connection for AUX Input
4 / Right Connection for AUX Input
5 / NAV / TV Audio +
6 / White-Black / Phone audio + Positive
7 / Tape right +
8 / Tape right -
9 / No connection
10 / AUX Input Ground
11 / NAV / TV Audio +
12 / Brown-Black / Phone Audio - Groundv

I take it that this is the same connection on the ng sat/nav wiring loom for the new bm54 radio tuner

and this one this is for the bm24 and ( the MG ROVER )

2000 - 2001 Radio Module - w/Nav

Pin No. / Function

1 / Speaker - Front Left (+)
2 / Speaker - Front Right (+)
3 / Speaker - Rear Left (+)
4 / Telephone Mute
5 / +12v from ignition (ACC and RUN)
6 / Speaker - Rear Right (+)
7 / DAC - i-bus
8 / Speaker - Front Left (-)
9 / Back Up (?) (terminal 30 - Fuse F56)
10 / GAL - speed signal
11 / Speaker Front Right (-)
12 / Speaker Rear Left (-)
13 / Nighttime Illumination Signal
14 / Speaker Rear Right (-)
15 / Ground
16 / Auto Antenna - diversity
17 / Not Used (LAC)
x18805:
Pin No. / Function
1 / Audio Cassette Right (+)
2 / Audio Cassette Right (-)
3-4 / No connection
5 / Low Frequency Signal (-) - Nav Control Module / Video Module
6 / Audio Cassette Left (+)
7 / Audio Cassette Left (-)
8-9 / No Connection
10 / Low Frequency Signal (+) - Nav Control Module / Video Module
x01037
Pin No. / Function
1 / Low Frequency Voltage Signal CD Changer Left
2 / Low Frequency Voltage Signal CD Changer Right
3 / Shield - audio shield
4-5 / No Connection
6 / Low Frequency Voltage Signal CD Changer Left
7 / Low Frequency Voltage Signal CD Changer Right
8-10 / No Connection

Sounds right mate.

__________________
52, 330ci Sport, Topaz Blue. Reto-fits: Mk4 DVD Drive, OEM Bluetooth, VR Control, OEM LED's, Folding Mirrors, Focal Speaker Upgrade, Sony SOT Amp, CCFL, Intravee II

here are the photos of MG rover tuner

That is the MGR equivalent of a single tuner BM24
Nearly every standard BMW part can be used in the Rover but as rule the firmware in each unit is either crippled or years behind current BMW units

I am not sure how far Jochen has got with this but hopefully we will be able to recode Rover units with BMW updates one day soon i.e the Rover Mk3 nav comp

__________________
Keith Alexander
Rover 75 CDT Connoisseur Se, MG ZT+T 190, MG ZT 260
Ellesmere Shropshire England

No, that's not a 'BM24'. BM24 is the dual-tuner radio made by Becker.

The radio pictured is the C23, single tuner radio. A C23 is the "Business RDS" model, whereas the BM24 is the "Professional RDS" model.

The C23 used to be made by Philips, and was also labelled as a Philips model PH7851. Now that Siemens VDO purchased the Philips automotive nav/stereo systems manufacturing business, the radio is now labelled as made by Siemens VDO.


I tried very hard, and discussed the problem with some very knowledgable and very experienced people who know these systems better than me. The conclusion was that the LRO (Land Rover) nav is coded in the firmware (EEPROM) to read only the LROC01O boot loader. We tried every trick we knew of to try and change the boot loader to BMWC01S, and get it to load the BMW nav software. All to no avail.

I finally solved my problem of what to do with the LRO nav by selling it to a person with a Range Rover who needed the original nav :-)

That has terminated my research into LRO nav units.

That is a C23 Business RDS tuner. Single-tuner, AM and FM.

Earlier models also had shortwave, but I doubt that will be fitted.

Used to be made by Philips, but now that Siemens VDO own Philips, that's why you see a Siemens label on the top.

Oops yes I get my 23 and 24s muddled!

I guess then if the Landrover uses dedicated firmware then MG Rover probably did the same what a pita!

I doubt the radio will be different, I can think of no reason why the Rover radio should have different firmware in it to a BMW radio, apart from the age of the radio (given that development of Rover units stopped when BMW sold Rover to Ford)

So a BMW radio will have newer firmware than Rover.

eg: if you want to use a BM24, use one with software version v9.0 or later (I have v10.0) for full compatibility with the Mk4 nav. Earlier versions work but produce undesirable effects at times, like switching to the radio screen for no apparent reason!

Hi Jochen ,your are right again :- brand new BMW (phillips) RDS Business radio.

Part Number : 65 12 8 382 364

Other numbers on the radio include:

PH7851W1142900

KW 9820

INDEX : 00

This radio will fit most:

BMW

• 7' (E38)
• 3' (E46)
  
• 5' (E39)

Radio will fit on vehicle's with satellite navigation display Well it looks like my tuner is the C23 made by siemens,and the sat/nav computer is the MK 111 as it as got the purple and blue wiring plugs ,with the LR/MGR software ,which won't load the bmw updates.
On the E46 sat/nav retriofit wiring loom there is a black three pin connection the colours are yellow black and brown ,could you tell me what they for and what they are connected to,here's a photo
http://img.photobucket.com/albums/v3...2_edited-1.jpg

3-pin connector: =AUX_IN connector, X14118

Black = AUX_RE+ (right) = Pin 1
Yellow = AUX_LI+ (left) = Pin 2
Brown = AUX_GND (ground) = Pin 3

Connected to the radio (N9) on connector X13649