70 + voltage regulator issue

relayed headlights doesnt matter (although they take operating power right off the battery IIRC) Does the VR have a triangle 2 prong plug? What alternator are you running? There is a correlation between the EVR and the mechanical type to the alternator. The islolated field squareback usually uses the EVR. The single field used the points type. The EVR regulated the exciter voltage ground connection so if there was a short to ground on the harness, the alt would go full tilt and produce >19V. the points type regulated the exciter voltage (+) to the alternator, turning it off and on to keep a steady ~13.9V output.