Herein we can see this lighting and ignition circuit diagram for the 1934 Chevrolet cars. The electrical system used here is called the double unit system with ground return. Be sure to study this wiring schematic comprehensively in order to get the best understanding on the wiring system. Components shown here are: generator, battery, dome lamp switch, distributor, headlamp, spark plugs, starting motor, horn, gas gauge tank unit, circuit breaker, electrolock, ignition coil, starting motor switch, dome lamp, etc. Click on image to view it larger in a new tab.