Which sequence correctly describes diagnosing a parasitic electrical draw on an ambulance and ensuring the charging system will function after repair?

• A. Measure current draw with ignition off, isolate circuits one by one, locate the source, and repair or remove the parasitic load; verify alternator/charging function.
• B. Disconnect the battery, then replace the alternator immediately and assume charging is fine.
• C. Ground the battery to neutralize any draw and monitor the voltage on the dashboard.
• D. Ignore parasitic draw if the vehicle starts; rely on normal charging at idle.

Answer: (A)