1974 Volkswagen Beetle

Electrical problem
1974 Volkswagen Beetle 4 cyl Two Wheel Drive Manual 50000 miles

I recently bought a 1974 beetle and changed the motor with an earlier year motor. The alt. On the 74 had a 3 prong plug that plugged in and a red and black wire going to the post. The motor I put in only has 2 posts and no plug in on the alt? I no longer have the alt off the 74 so what can I do to wire the alt. Up? Do I need to buy a volt. Regulator? I'm assuming the 74 had an internal regulator so there was not one on the body? Please help me figure this out, I appreciate anything you can do to help me. Thanks
December 22, 2007.

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