1995 Oldsmobile Aurora Q&A

1995 Oldsmobile Aurora Question: gauge and radio light dont work

ihav no gauge lights at all and i turn on my head lights i lose my radio and heater control lights ive tried the dimmer looked at all the fuse cant find the issue please help if u can -
Answer 1
Your alternator is going -
Comment 1
How can you tell that the altenator is going based on losing lights on instrument panel and radio console? -