Too Much Voltage?

Hi Guys.

First, I just wanted to say that although my background is electronics I have no Idea what the high limit is for alternator output. Here's a little background on what we are working on. My friend has a 1988 318 powered Dodge D150 pickup. One Friday he got into the truck to go to our weekly cruise and it wouldn't start. I came over to help him out and after a few hours of troubleshooting I decided that it could be the pickup coil in the distributor. I disconnected the pickup wires and with a spark plug tester connected to the coil I shorted across the connector and removed it, when I did it produced a spark. He replaced the pickup and the truck started fine, but the next Friday it failed to start again ( new pickup bad?) Anyway he got ANOTHER pickup and the truck started fine. By this time he had had enough and he couldn't trust that it wouldn't fail again so he wanted to rip all of the computer garbage out. We removed the computer and rewired the entire truck. The computer in this truck controls the alternator and so I had to come up with a external regulator setup which is now a standard Chrysler electronic regulator and a very simple circuit. The center pin on the regulator goes to the battery and to one of the field connections on the alternator. The other pin on the regulator goes to the remaining alternator field. When we start the engine the alternator is charging but at 14.6 volts which I feel is excessive. I have checked for proper ground, sanding the paint away before mounting. I believe that the problem may be with the three words on the back of the regulator "MADE IN CHINA"!!!!!!!! Anyway I've heard that someone was making a regulator with a adjustment pot on the back of it. If any of you know where to get one of these or have any suggestions any input would be greatly appreciated.

Thanks
Glenn