An instructional graphic I created to teach someone how to use a 12v Test Light to identify if electricity was flowing to a specific component.
My rendering of a 1967 Triumph Bonneville ignition system. These switches control when the spark plug ignites the compressed mixture of gasoline & air in the cylinder. Like WWII era computers these rely on physical switches to process information. These switches called “points” form a Boolean “Not” gate, when the input activates the switch it breaks a path within the ignition circuit giving a direct path to ground forcing the electricity to take a path with far more resistance through the ignition coil and spark plug resulting in a high voltage spark jumping across the gap causing an explosion which the engine then turns into rotational force.