Auto Lighting Circuits

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This circuit module is compatible with all the D3000 Base Unit options and introduces students to the lighting circuits that are used in modern vehicles.

The board models the circuitry found on a motorcycle and simulates the following circuit components:

• 12V battery
• Fuse (resettable)
• Two relays
• Flasher unit
• Six different types of switches
• Interior light
• Dashboard lights
• Brake (stop) lights
• Reverse (backup) lights
• Headlamp circuits with dip/main (Lo/Hi) beams
• Direction indicator (turn signal) lights
• Side and rear (park and tail) lights
• Topics covered:
• Interior light circuits
• Brake (stop) circuit
• Reverse (backup) circuit
• Dip/main (Lo/Hi) beam circuit
• Hazard warning circuit
• Direction indicator (turn signal) circuit
• Side and rear (park and tail) circuits
• Introduction to headlamp circuits
• Relay circuits

Typical activities include:

• Use a multimeter to investigate a simple vanity light circuit.
• Troubleshoot a faulty vanity light circuit with a multimeter.
• Build an interior light circuit operated by a door contact and add a manual override.
• Troubleshoot a faulty brake (stop) light circuit with a multimeter.
• Investigate a reversing (backup) light circuit with a multimeter.
• Troubleshoot a faulty dip/main (Lo/Hi) beam circuit.
• Investigate how a flasher unit works.
• Construct a hazard warning circuit.
• Troubleshoot a faulty hazard warning circuit with a multimeter.
• Troubleshoot a faulty direction indicator (turn signal) circuit.
• Troubleshoot a faulty side and rear (park and tail) circuit.
• Construct a relay-operated headlamp circuit.
• Build a complete vehicle lighting system.