Title: Check all the exterior lights, lenses, reflectors, and conspicuity tape.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing the Lighting System

Checking should include

- visually inspecting for the proper function of stoplights and bulbs, including cracked, broken, or hazy lenses, lights that will not hold adjustment, and dull reflectors
- checking for the proper function of bulbs, flashers, turn signals, and hazard switches
- visually inspecting for proper clarity and aim of the headlights
- referring to service materials and manufacturer guidelines.

Process/Skill Questions:

- What are some common reasons for exterior lights not operating properly?
- What inputs are necessary for the exterior lights to work properly?