Indeed Alan, i guess he’d have grown up through the 40’s & 50’s and watersports in those days would have been done on a victorian beach

There are pictures of "most" of the connectors in RAVE, find the one you want in the electrical circuit diagrams, it has a number next to it, like (V100) the OBD socket, then go to Electrical Library and the pictures are there...

Pin out numbers are shown on the wiring diagrams as are the colour code and thickness of wire... what more could you want...????

As for part numbers, phone Dan at Duckworths and he will tell you, and give you an unbeatable price for the genuine article and post it to you next day free of charge...

Stop worrying about it going wrong, if they break we fix them, simples..... go and buy one and enjoy it....  Pete
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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

If the thread starter is buying an early model, then it's just a BMW with a nice suit on anyway.

I think there are many DIY servicing people on here, like me, and we all are a bit shy of going over to the dark side and a new unfamiliar car manufacturer, but as said earlier, they are all DIY fixable, provided you read up and gather many experiences from forum(s) and make your own judgement.
I would suggest you buy a typical diagnostic tool for about £300. Many here will champion its merits, and it's pretty good value. Just don't but the typical all makes cheap OBD 'short' version.
Don't go and buy the first one you see, unless you have at least looked round a few others, just to get the smile off your face for a short while.
Consider your typical mileage, and buy the fuel type you think you will be happy with. As each have their own 'stories'

Try to make sure you are really happy with its diving, and gear changes, and it's not dripping any fluids, whilst ticking over for a good half hour. Laying on you side with a torch under the sump will tell you more than looking at the shiny bodywork.

Service history in your hand is so more reassuring than -' it got lost, you can get a copy' etc.

Cars without history, should be far less, but they don't seem to be and are worth a cheeky low bid.
My opinion of jazzy wheels and chrome accessories tell me to avoid, against a typical standard car.

And try and get the vogue model if you can. They are easier to sell on!

(Should you go mad- and even think the worse!)