I'm after an adaptor lead to connect to my 2001 E39 540i Sport wiring loom which had a Motorola V50. It has a 25 pin serial port type connection and I need it to connect to the BMW Bluetooth ULF module which has a 54 pin plug.

I know this lead exists as a friend of mine has done the same thing using this lead, but his supplier can't get hold of one at the moment.

I have borrowed his lead to test my bluetooth upgrade and it works perfectly, but now I am getting impatient as I fitted the bluetooth kit 1 month ago and can't find the adaptor lead anywhere

Can anyone help me??