I went through the same thing as you discussed here. No guages and had to go through the old shop manual and test every ground, every wire. Extra ground at the fuel, the whole works...they should add and addendum to the shop manual..lol
Well I hooked the voltage regulator up. I hooked it three different ways to get the regulator feed. I got the fuel guage to move on the last try. The oil pressure worked in another position. Still no temp guage?
So i know no guages must mean the regulator is bad, but where is the regulator at? Mine is a 67 and I bought one thinking to find one externally...Has anyone messed with these? I have not received my shop manual yet.