Title: Test switchers, bulbs/LEDs, sockets, connectors, terminals, relays, wires, and control components/models of parking, clearance, and taillight circuits.
Course: Diesel Equipment Technology II (20107-II) > Section: Electrical/Electronic Systems: Servicing the Lighting Systems

Testing should include inspection, based on

- manufacturer guidelines
- a description of normal operation
- the interpretation of appropriate wiring diagrams.

Process/Skill Questions:

- What are some common reasons for switch failure?
- What is the difference between a normally-opened and a normally-closed switch?
- What inputs are necessary for the parking, clearance, and tail lights to work properly?