Practice question

All exterior lamps on one side of a school bus are dim. A voltage-drop test should focus on the:

  1. Alternator rotor
  2. Starter solenoid
  3. Common ground for that side's lamp circuits
  4. Air brake governor

Answer: C — Common ground for that side's lamp circuits

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Practice more: ASE S6 Electrical Electronic Systems (School Bus) Practice Questions - ASE S6 - Electrical Electronic Systems (School Bus) Certification Exam →