Alternator Wiring

[Dilkris]

I am sure this has been tabled before but I have failed to find the relevant link on the forum. Can somebody please explain (better still provide a sketch - or provide the thread reference) for the wiring on the attached alternator? The Europa circuit diagram appears to show just 3 wires but then I have 2 more, B+ and W....   
Where do they go to and from or are some redundant in the Europa install?       

[EuropaTC]

Hi there,
If that's an A127 alternator then the pdf on this post is how I first changed from the original alternator to a 17ACR and from that to the A127. Wiring changes were involved in the first change but after that the A127 was straightforward.
There will be a thread about it on here but I've no idea where it will be now, it was 2016 when I did this mod.
Brian

[Dilkris]

Many thanks EuropaTC - I can work with this.