ok guys, I got it!
This is how I wired it up, check out the picture in this link
http://67-72chevytrucks.com/vboard/s...ght=ALternator
Then, I ran a wire from the alternator, to the fuse going to the amp meter, ( the fuse on the drivers side of radator ) and every thing is looking right, the alternator is putting out about 14.5 volts, ( checked this with a meter ) I also pulled the positive side cable off while it was running and the truck kept running. Too most of you guys this is probably a easy change over, but when I tell you guys that I don't know any thing about automotive wireing, I am not lieing to you, I wish I understood more of how it works, things would be a lot easier for me when it comes to wireing.
Thanks for all the help guys, I have a constant voltage now, my lights are not flickering any more, and my dash lights are a lot brighter,
Sam