How do you test a radio or the amplifier on a 1995 Lincoln Mark VIII?

To test the radio or amplifier on a 1995 Lincoln Mark VIII, start by checking the fuses related to the audio system to ensure they are not blown. Next, use a multimeter to measure voltage at the amplifier's power and ground connections. If there's power, connect a known working speaker to the amplifier to see if it produces sound. Additionally, try tuning the radio to different stations and checking for any audio output to confirm functionality.