Question

1. what two gauges are used to monitor the vehicles charging system?

voltmeter and ammeter
voltmeter and signal test light
ammeter and fuel pump relay
signal test light and fuel pump relay

Explanation:

The voltmeter measures the electrical potential difference (voltage) in the charging system, and the ammeter measures the electric current. Together, they provide essential data about the charging system's performance.

Answer:

Voltmeter and ammeter.