After replacing a wiring harness, what verification steps ensure proper function under load?

• A. Verifying continuity and performing load testing
• B. Visual inspection only
• C. Painting the harness
• D. Replacing with a different part number

Answer: (A)

After replacing a wiring harness, you must confirm that the electrical paths are complete and can carry current the way the system expects. Verifying continuity checks that every conductor is intact from end to end and that there are no unwanted opens or shorts, ensuring each wire goes to the correct load. Then, performing a load test puts actual current through the harness and connected components to verify proper operation under real conditions, checking for acceptable voltage drop, heating, and any abnormal behavior that static checks might miss. Visual inspection alone might catch routing or connector seating issues, but it cannot prove electrical performance under load. Painting the harness or using a different part number does not verify electrical function, so they don’t address the necessary checks.