instrument panel failure

Hello there, This is my first dive into the delights of my W209 350CLK. I bought it knowing it had a few problems and have been enjoying working them out. The battery was running flat over night, losing about .375 mA per hour. I've traced it to the instrument cluster. I'm not sure if the...

Use of indicators is causing the instrument panel and the electric windows to fail. Some suggestions as to where and what to look at first would be much appreciated. thanks.