The next schematic in line is the ignition circuit diagram for the 1942-1948 Ford 8 cylinder models. The Ford’s ignition system shown in this schematic will have the following components: 6 volt battery, ammeter, ignition switch, resistor, coil, and also distributor. Note that the coil is separated from the distributor. Study the wiring diagram before performing any wiring work on your Ford vehicle. Click on image to view it larger in a new tab.