Alternator Wiring

[Guest danny_samb]

Hi all I have a 2b with Sierra doc engine fitted. Standard Sierra loom. I'm after what wire goes where on the alternator. There is 3 poles on the alternator. The wires I have are thick red I'm guessing battery. 2 brown wires into 1 ring terminal. But taped to the red wire is a thin black wire that looks like goes to the same pole as red wire.

If done a test on the wire to try find out where they go, put both wires give a reading at the battery light. The alternator was removed last week. But before I had chance to label the wires a friend had removed them. It looked like the brown wire went to the b+ and the thick red went to w or d bit surely that can't be right?