1990 Mercedes-Benz 300E Q&A

1990 Mercedes-Benz 300E Question: How do I fix the switches for the A/C etc on the dash...

3 switches that have tiny pin like lights in the bottom R/H cnr of them. They don't switch on. Are they run from a certain spot under the dash? -
Answer 1
seek diag and est -
Comment 1
The manual that came with is in Japanese. I think they are for the A/C. Could you please help? -
Comment 2
YOU MEAN GERMAN? SEE AN EXPERT -
Comment 3
NO I MEAN JAPANESE! I'm not stupid. -