Hi all, so my alternator went out on my 1990 W150 4x4 with the 316 (318?).
I've been getting mixed information as to which alternator I need for replacing.
I've seen both internal and external being the one said that I need. Does anyone know for certain what route I need to go?

 

The voltage output of the alternator is controlled by the computer on the v6 & 5.2. However I remember right, I think the 5.9 has an external regulator. newtjr

 

Read the paragraph on this page that say's "The Problem"
https://alternatorparts.com/external...nator-kit.html

Dave