Does anyone have a good reference that can tell me how to wire a 3post alternator? On my 65 with a 302.

 

Here's the wiring schematic for the alt., should be +, - and field used unless you're hooking up an electric choke too, that wire goes to the stator post.
http://hammar.dyndns.org/~djhamma/wiring/1965/1965c.jpg
Jon

 

Check out page 11:

http://static.summitracing.com/globa...0526manual.pdf

 

is all of that really nesessary? I don't want a light and I have a toggle switch and a button instead of a key switch. Does that mean I need an external voltage regulator? Does anyone have a part number for this?

 

If you want conventional operation, use conventional wiring. All 64-73 (and later) had an external voltage regulator.

 

Here is what I'm working with. This was purchased by the PO and every other part he bought was wrong. I figured out a way to mount it that should work but now is the wiring. Can someone give me a part number to reference for the external regulator?

 

I don't know for sure but that looks like the same alternator that came out of my 66. I would get a wiring diagram for your model vehicle. Then look for a diagram for the alternator to identify which post is which. The 2 easy ones are the big red one (hot lead to battery side of starter solenoid) and a ground (should wire into harness and ground at voltage regulator). I would find a local mustang shop to source the correct regulator. You can also try visiting a shop that rebuilds alts and starters. They can wire this stuff in their sleep.

Verify everthing I said before you wire it.

Good luck.