i made a phone call to my younger brother's diesel tech teacher, n he got it straightened out. i had the switched power hooked to the "I" terminal on the regulator, we unhooked it, plugged it into the "S" terminal on the reg, n now everything works great. thanks for ur help guys.

 

Hey guy's 1st first time posting on here I think it's been so long I have all those problems that all you guys have mentionedI put a brand new regulator brand new alternator brand new ground cable-0/2,put a ground cable from the vrto the negative battery postI took that big post on the alternatorbent up the cables on that big black post from the alternatorand I ran 12 gauge from the alternator to the VRand I am still getting 16 voltslast night when I Ran 12 gauge wires to the VR from the alternator test drove it it was 14 bolt for about 15 minutes then the alternator start making some noise and then it shut up to 16 volt again the only ground I have not fixed was from the alternator ground to the blockI just seen it last night it looks like it's probably in 8 gauge or bigger this is driving me nuts guys I need help

 

verify resistance on pcm ground circuts, it it was ok for a while then went nuts it could be heat building up in a ground due to crap resistance
load sides usually look ok and dont show issues but grounds are far more important due to the fact they are normally shared with splices
try grounding the body to the powertrain also

let me know what changes if anything
good luck
scott

 

Sounds good M.T.S.M.T.M. I will try that tomorrow, it started when my Battery died, I didn't have a volt meter @ the time so I put new Group 65 Battery and I didn't have the volt gauge yet so about 5-6 days in to the new battery lights were getting dim so I charged the battery & got a V.R. and noticed lights were bright as heck so I put on volt gauge & noticed 16 volts so that's when I started messing with grounds, about the pcm this motor is a1992 Cummins transplant in 1989 RamCharger that I did not do & there was already a external V.R. sorry about the long rambling but I do appreciate your response

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hey guys 1 more thingwhen I bend up the prongs at the alternator where the little black box is or the wires go to the V.R. drove the truck for about 15 minute volts were at 14 then I heard a sound from the alternator and volts shut up to 16 it's a brand new alternator hope I didn't damage anythingI taped up the prongs that were at the black box