1. The distributor shaft has a cam that operates the contact breaker . 2. This model had triple contact breaker points making timing adjustment complex. 3. The ignition firing sequence begins with the points ( or contact breaker ) closed. 4. They also make modules for vehicles with two or more sets of contact breakers . 5. When the piston was at the right point, the contact breaker opened, breaking the battery current. 6. This was a simple iron-core inductor, used with a battery and a switch called a contact breaker . 7. The engine operates contact breaker points, which interrupt the current to an induction coil ( known as the ignition coil ). 8. Early models used a 6 V electrical system with contact breaker / condenser ignition, whereas later models used a 12 V system. 9. When the contact breaker closes, it allows a current from the battery to build up in the primary winding of the ignition coil. 10. When the contact breaker opens the circuit, the magnetic field collapses, causing a high electric voltage in the primary and secondary coils.
