Convert 3 pin alternator to 2 pin

Hi all, 

I currently have a 2005 Ford Focus track build that I have been enjoying in the garage as much as on track. I just finished swapping in a 2.5 Duratec, and learned that I can move the alternator to the front using a Mazda 5 alternator instead of the stock one. The main issue is that the Mazda 5 alternator is 3 pin, and the original alternator is 2 pin, along with the plug. Is it possible to switch out the connectors? Do I just cut the two pin harness and solder in a 3 pin? Any help is appreciated. 
 

Thank you!

Try posting in the grassroots Motorsports thread or in the build Section - probably have more luck!   Wish I knew 

Looks like a charge wire and the two secondary wires go directly to the pcm. Don't know their specific function though.