I have a new to me '78 fj40, (I know,I know y'all want pics!! If I ever fininsh fixing the PO crap I will). anyways, I noticed that my headlights and dash lights were "pulsing" this morning on my way to work. The am meter was bouncing all over the place, it would even keep time with the turn signals, so I'm thinking voltage regulator, so I go to napa get the part, pop the hood and no voltage regulator, there is a porcelin power strip thing on the right fender, is this a form of voltage regulator?