Engine electrical systems

The engine electrical systems include all ignition, charging and starting compo­nents. Because of their engine-related func­tions, these components are discussed sepa­rately from chassis electrical devices such as the lights, the instruments, etc. (which are included in Chapter Chassis electrical system).

Always observe the following precau­tions when working on the electrical systems:

a) Be extremely careful when servicing engine electrical components. They are easily damaged if checked, connected or handled improperly.

b) Never leave the ignition switch on for long periods of time with the engine off.

c) Don’t disconnect the battery cables while the engine is running.

d) Maintain correct polarity when connect­ing a battery cable from another vehicle during jump-starting.

e) Always disconnect the negative cable first and hook it up last or the battery may be shorted by the tool being used to loosen the cable clamps.

It’s also a good idea to review the safe­ty-related information regarding the engine electrical systems located in the «Safety First!» Section near the front of this manual before beginning any operation included in this Chapter.