67 Barracuda alternator with 2 FLD connections
This is the breakdown of current measured with a clamp meter on the alternator output of my Grand Wagoneer.
That has a Duraspark ignition which uses a little more current than a points ignitions.
It has a 12SI alternator whose field is internally powered, so that may not be getting measured on the output wire.
Headlights were H4s which draw more power than the 6012 sealed beams a '67 came with.
This Jeep has about the same instrument lights but also side marker lamps which '67s don't have.