Thanks for the replies. I checked the truck this morning and you were right Dave, to my surprise it has a regulator on the firewall.
A dumb mistake on my part, I should have known better as I am old enough to remember the old 6-volt systems with a regulator. Now how do I check to see if the regulator is bad or can it be adjusted or not. It has a 4 wire plug going into it marker F 2 3 4 and a condenser plugged into the bottom. Again, Thanks all for the help this is a great website and I have learned a lot from it. Just hope that someday I can help others with there problems.