[tbirdtbird]

hook the feed to the starter sw to the battery side of the ammeter. It is not necessary to run this thru the ammeter.
Hook all other accessory wires (lights, horn, the feed to the ign sw) to the other side of the ammeter. Trial and error to determine which side of ammeter is which. With car not running, and lights on, ammeter should show discharge.
Red wire of ign sw goes where? You need to know where it goes before continuing on