Where does the alternator go on a Harley-style motorcycle?

Question

I can do everything else when it comes to building a bike, but I neglected to learn anything about the electrical system. I'm currently building my first custom bike, but as soon as it comes to wiring, I'll be lost.

Answer 1

In the primary case you have a rotor which is a big bowl shaped magnet that spins on the crankshaft around a stator which is a series of wrapped coils. That is your alternator.
That runs to your rectifier/regulator that feeds that battery and breaker panel.
You can purchase complete wiring harnesses and use a manual to adapt an existing harness to your custom rather than starting from scratch.

Answer 2

Alternator goes on left side crankshaft end, under primary chain sprocket.