Electrical Circuit Identification

A numbered table of every circuit used on the trucks, giving the circuit number, wire color and circuit name. It runs from basic feeds such as battery, ignition and starter, through lighting, wipers, blower and air conditioning, power seats, windows, locks and radio circuits, to electronic engine control, fuel injection and glow plug circuits. Use it to match a number on a diagram to a wire color and function.

What this section covers

• Circuit number, color and name tables
• Battery, ignition and starter feeds
• Lighting and signal circuits
• Wipers, blower and air conditioning
• Power seat, window and lock circuits
• Engine control and fuel injection circuits