First restoration I've ever done so some rookie questions here. I'm restoring my '50 3100 and electrical is definitely not my strong point. I have the frame setting on wheels with the rear end, front suspension and brakes basically completed. I dropped in a rebuilt '56 235 out of a Bel Air and want to test run the engine before I reassemble the cab & bed onto the frame. Got everything bolted in and ready except the wiring. I've converted to an alternator setup so I've got the DA Plug. I need to know if the following setup is what I need to simply start the engine and run it to break in the cam & dial it in:

1. The + side battery cable connects to the starter switch.
2. A 10 ga wire runs from the starter switch to the amp meter + terminal.
3. A 14 ga wire from the ignition switch to the amp meter - terminal.
4. The heavy alternator wire connects to the - terminal of the amp meter .
5. The light gauge alternator wire connects to ignition switch terminal.
6. A 10 gauge wire runs from the ignition switch to the resistor then to + side of coil.
7. A 10 gauge wire runs from the - side of coil to distributor.

My first question is does this sound correct? Am I missing anything? Second, do I need a resistor for the amp meter since it's originally a 6 volt? Next, the ignition switch has 3 terminals and I'm not sure where the wires outlined above connect? There are no markings on the switch/terminals and the diagram in the shop manual only shows 2 being used. Finally, do I need to ground the ignition switch? Thanks!

It never costs more to ask and it never costs more to think big.