My very untechnician-like solution would be to replace the inexpensive voltage regulator.

Beyond that, I would replace the generator with a (cringe!!!!) GM one-wire alternator.

I'm really,really sorry you had to hear me say that,hope I never do again.The fact is,it is a very easy,long-term solution that will save you headaches.You'll need to either purchase an alternator mount,or fab one yourself.

Here are a few threads about the topic,including using a Ford alternator:

https://www.ford-trucks.com/forums/5...lternator.html

https://www.ford-trucks.com/forums/1...altrnator.html

https://www.ford-trucks.com/forums/7...confusion.html

I believe you can't use the search function till you have 25 posts (there are many threads in FTE's archives on the topic), that's why I provided a few links to get you going.What I couldn't find was the thread showing you how to build your own aletrnator mount , using the generator brackets.Sorry

I did the GM 1-wire conversion, am happy albeit with a few caveats: a) I desecrated my truck by installing a GM part in it b) the idiot light doesn't function in this set-up.

In hindsight,I would spend the extra money and do the Ford 1-wire conversion,which allows the idiot light to work - if money is no issue.

I keep telling myself I'll correct it someday.Till then,I live a life of shame and regret!!!

Good luck,
Steve