Alternator help

I have a Bosch Brasillera (9120080122 K1, 14V 23/51 Amps) alternator and i want to know how to test if its charging.
It has three wires, a B+ terminal - which i gather is the main power as it has a big heavy wire on it, a D+ terminal as well as a third wire.
Also - does anyone have a wiring diagram for the generator to the battery?
TIA

http://www.vw.magazine.8m.com/wire/wire.html


???sorry, it doesn't seem to connect. I gave this site address on another query & it worked fine. It has a heap of wiring diagrams.

[Edited on 15-6-2003 by geodon]

[Edited on 15-6-2003 by geodon]

[Edited on 15-6-2003 by geodon]

Thaks for the diagram!