E28 OBC question (where is it!)

My OBC ('85 UK M535i) has been showing PPPP since I bought the car, time
and date fns work OK but nothing else.

I'm really struggling to find the relay box for the OBC. I can find the
bonger and there's a space next to it in the rack under the steering
wheel that I suspect is for the module.

There's a space under it which has the UK/euro alarm (the one that needs
a second door keyhole for the magnetic key!), I initially thought it was
the relay module until I realised it had too many connectors.

Have tried tracing the wiring but to no avail as yet. I suspect the unit
is missing completely.

Can anyone tel me where it should be, even those with left hand drive
cars!

--
Who needs a life when you've got Unix? :-)
Email: john (AT) unixnerd (DOT) demon.co.uk, John G.Burns B.Eng, Bonny Scotland
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A thought, I wonder if cars fitted with the BMW alarm had a modified OBC
relay box which combined the functions of the alarm and OBC? The OBC
box has blanks for other connectors and looks SO similar to the alarm
box.

--
Who needs a life when you've got Unix? :-)
Email: john (AT) unixnerd (DOT) demon.co.uk, John G.Burns B.Eng, Bonny Scotland
Web : http://www.unixnerd.demon.co.uk - The Ultimate BMW Homepage!
Need Sun or HP Unix kit? http://www.unixnerd.demon.co.uk/unix.html
www.Strathspey.co.uk - Quality Binoculars at a Sensible price