What should a technician do if a school bus shows signs of electrical shorts?

Answer: B — Conduct a thorough inspection of wiring, connectors, and circuits

When a school bus exhibits signs of electrical shorts, it is essential for a technician to conduct a thorough inspection of wiring, connectors, and circuits. This approach allows for the identification of the root cause of the shorts, which could be due to damaged insulation, corroded connectors, or faulty circuits. Examining these components closely helps to ensure the safety and reliability of the electrical system. Running the engine to observe performance can provide useful information about the overall operation of the bus, but it does not specifically address the immediate concerns related to electrical shorts. Simply replacing the battery might not resolve underlying electrical issues, as shorts can exist in different areas of the system. Checking only the fuses is also insufficient because fuses only protect circuits from overload and will not reveal the condition of wiring or connectors that may be responsible for the shorts. A comprehensive inspection is necessary to properly diagnose and rectify the problem.