[sweepleader]

If the gen in your truck works now you should not have to go all the way to the ignition switch to convert. The '63's came with a divorced regulator alternator, the Chev shop manual for '63 shows that it is connected to the truck the same way that the gen is in '62.

Do you have an ammeter on the dash? It matters a lot regarding how you connect the output of the alternator if you want the ammeter to work. I think that is what vince1 is concerned about.

The large brown wire from the reg A terminal gets connected to all the wires from the reg B terminal and the alternator output. The dark blue wire to the reg F terminal gets disconnected/discarded. The small brown wire is the dash light, it depends on which alternator you are using.

The small brown wire from the regulator V terminal goes to the the dash light. You will need that for the alternator.

The rest of it depends on the alternator you are using. Do you know what it came out of? Do you have the connector for it?

A big alternator can overheat the stock wiring, don't get too crazy with the alternator output choice.