Dave, you mean the typical S1 Delco right? If so, the big terminal goes to the battery of course.A 80 amp fuse or fusible link is recomended. The two small spade terminals are marked 1&2,terminal 2 also gets hooked directly to the battery at any convient point, you can fuse those also if you want. Terminal one is switched by the ignition.For proper operation you need a switch with two separate contacts, like a switch that has an "acc",position. Hook up terminal one to the terminal on the switch. Some alternators may also need some resistence in the number one wire, a small lamp wired in series as an idiot light serves well.The ones I used had the resister on the internal regulator and functioned fine without the light bulb.On one conversion , on an old tractor, the alternator overcharged, reversing the two small terminals restored proper charging in this case, I don't know why though. hooking up the 2 wires wrong will not harm the regulator, just affect how the unit charges.
Laser eye correction? catracts?, hope all goes well. I hear you on the eye sight, I had an eye operation when I was a kid,a few days with bandages over the eyes is a lesson learned.