Can you add a "W" output to an alternator?

[red64chevelle]

So, I got a nifty VDO tach to be driven off the "W" terminal on my alternator, then after getting all set to install it, I find out I don't have a "W" plug.   :cry:

Can I add one to it?  Or if not, what alternator should I buy to get one.  Thanks in advance.

[jimfoo]

Yes, you just need to hook a wire up to the alt from any of the phases before it goes through the diode. On a GM alt, you can use a ring terminal on one of the studs. I'm not sure how the diodes are in a normal VW alt though. Just make sure the wire won't get caught on anything rotating and that it is well insulated.

[gigaz2]

also make it as flimsy as possible, so that it fuses instantly if something goes wrong.