Final answer:
The generator warning light and ammeter showing battery discharge indicate issues in a vehicle's electrical system, which may involve a faulty alternator or worn belts.
Step-by-step explanation:
A generator warning light and the ammeter showing battery discharge are indicators of potential problems in a vehicle’s electrical system. When the generator, often referred to as the alternator, is not generating enough power to charge the battery, the warning light will activate, and the ammeter may show that the battery is discharging because it is providing more power than it is receiving. This could be due to a faulty alternator, worn belts, or an electrical draw that exceeds the charging system's capacity. Regular maintenance of a vehicle's electrical system is crucial to prevent such issues.