The is a system which is necessary for igniting the compressed fuel-air mixture within the engine cylinders. The electric current from the electric power source (battery and generator), flows through ammeter (5) and ignition switch (6), into (7). The low-voltage current through the primary coil (14) is interrupted by contact breaker (9) of the distributor.

This charges the magnetic field within the intermittently, thus inducing high voltage. The high voltage current is distributed by the distributor (10) through the high tension cord (16) to the spark plug installed in the combustion chambers of the cylinder head. The spark plugs are made to spark to ignite the fuel-air mixture un the cylinders. To diagnose defects of the ignition system, always have this distribution principle in mind and check the low and high voltage circuits separately. The following schematic illustrates the Datsun Truck 320 Diagram.datsun truck 320 ignition system wiring diagram

1. battery
2. magnetic switch
3. starter motor
4. starter button
5. ammeter
6. ignition switch
7.
8. condenser

9. distributor
10. distributor cap
11. cylinder head
12. voltage regulator
13. generator
14. primary cord
15. secondary cord
16. high-tension cord



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