Ok, with the vr triangular plug at the bottom of the vr, i got the following readings:

Idle: top wire = 14.4 bottom right = 4.6
rev: top wire = 15.5 bottom right =13

Truck was wired without issue for a few years.

I did question myself after seeing a diagram that showed the ignition feeding from the lower vr terminal. Mine is fed from the top like other diagrams. I used jumpers to swap the field connections onnthe vr for a few minutes. I must have cooked that new vr because after that the alt stud readings held steady around 12.26 and the gauge in the truck was no longer reading.

So far i have not run seperate witing like Robert suggested as i wanted to report back first. In addition, i added an extra ground and cleaned the alt connections at starter relay. New positive bat cable since i had one.

Last edited by wally426ci; 12/11/17 03:13 PM.