its an external mounted on the front grill frame. Using a Delco alternator. Cant see any id on it. Had all the service manuals on cd but they wont play this morning. What brand is that.? Thanks

 

It's not just the standard ford voltage regulator? Got any pictures of it?

 

The original alternator would have been either an Auto-Lite (Ford brand) or a Leece Neville. Delco alternators were used on GM vehicles, so it's not original to your truck.

The original points type regulator was an Auto-Lite, came with a black cover w/a white Auto-Lite decal. In 1973, Motorcraft replaced Auto-Lite, the cover was changed to blue (w/a yellow Motorcraft decal), was used thru 1981.

In 1982, Ford replaced the original points type regulator with an electronic type. Has a flat aluminum cover with MOTORCRAFT embossed diagonally. The original wiring harness is used with this regulator.