Is it possible to install an external voltage regulator on a dodge cummins?

 

Yes, this refers to 1st gen but works the same on all years
https://www.dieseltruckresource.com/...n&onlynewfaq=1

 

awesome thanks...at the bottom theres a link for the schematic that doesnt work...any chance of getting it?

 

I had it in my gallery but now it's gone. I resubmitted it and will post it tomorrow after it's approved or you can PM me your email address and I'll send it to you.

 

It's very simple.
What's important is that the switched positive is at the top of triangle, the other two terminals that go to the alt can be traded. The stock wires have to be disconnected and taped. Use a good ground.
Any 12v regulator will work, all have the same triangular plug setup.