How to Troubleshoot Electrical Issues in an Audi 80?

I've been having problems with the electrical system in my Audi 80, and I need some help troubleshooting. The lights flicker and the battery drains quickly. What steps should I take to diagnose and fix the issue?

First, check the battery and its connections to make sure they are clean and secure. Often, loose connections can cause electrical issues. If that doesn't solve the problem, you may need to replace the battery or have it tested at a mechanic.