My car's an 07/2001 3.0D Sport, and it came with the Motorolla/BMW phone built into the armrest and Nav. I want to upgrade to Bluetooth. I took some shots of what I have at the moment:






I originally planned to follow this install based on having an SA620 SES module, but after checking the part no shown below (84216907520) I have and SA632




I did some further research and found this guide, however I'm still baffled based on not really knowing the bits I already have.

Any suggestions?

Not sure which is the 54 pin connector or, more likely on mine, the DB25 (the following aren't my pics):