you might mean the one with 3 wire plug.
i usually look for an application like a mid 80's toyota truck so it has a v-groove belt.

the hookup is switched 12v source, a 12v reference wire. both of those are in the plug on the alternator.
a stud for the alt output that goes to your battery post or something like that...

the ARengineering website has a pdf of the instructions, mancini sells his kits...