CHAPTER 2 AUTOMOTIVE ELECTRICAL CIRCUITS AND WIRING

INTRODUCTION

Learning Objective: Identify charging, starting, ignition, and accessory-circuit components, their functions, and maintenance procedures. Identify the basic types of automotive wiring, types of terminals, and wiring diagrams.

The electrical systems on equipment used by the Navy are designed to perform a variety of functions. The automotive electrical system contains five electrical circuits. These circuits are as follows (fig. 2-1):

Charging circuit

Starting circuit

Ignition circuit

Lighting circuit

Accessory circuit

Electrical power and control signals must be delivered to electrical devices reliably and safely so electrical system functions are not impaired or converted to hazards. This goal is accomplished through careful circuit design, prudent component selection, and practical equipment location. By carefully studying this chapter and the preceding

Figure 2-1. - Electrical circuits.