Just a suggestion- - - -instead of getting several threads going, it's possible to ask several questions with one post and get all of them anwered. With the very simple wiring system on your truck, converting to 12 volts is ridiculously easy. The 6V starter will work fine on 12 volts with no modification. Just swap the light bulbs to 12V, install a 12V ignition coil and a ballast resistor in the ignition system (same distributor, points, and condenser), and either use a 12V generator and regulator, or install an internal-regulated alternator and forget about the old regulator. Just bolt the Armature and Battery wires together on one regulator terminal, or just bolt them together, tape the connection, and remove the regulator altogether.
The 6V wire harness is plenty heavy to carry the 12 volt circuits, much heavier than necessary, in fact. Until you're ready to do a full rewire job, just tape up the bare spots and press on!
Jerry
