Dang it goldduster, you're killing all the reasons the ammeter lovers say it's an important gauge... IMHO, an ammeter is one of the most worthless gauges you can install in a car.
A voltmeter will tell you right away if the alternator/charging system is working properly. This without the hassles of any ammeter wiring.
I build wire around products and other electrical products. If you have any questions, just like here, ask away!