cainnc

Hi All,

I've diagnosed a 1.7ma drain coming from the overhead control panel on my '06 G550. I unplugged harnesses one by one and discovered that the harness supplying power to the control panel is causing the drain. What are the chances that the control panel itself has a fault? I am referencing this website http://www.micro-tronik.com/learning...control-panel/ for information since I have not yet found wiring diagrams (any help with manuals is much appreciated).

The panel supplies voltage the following, but I can't determine which of these are in the power harness connected to the panel since I don't yet have a wiring schematic.

• Inside rearview mirror unit
• Automatic light switch daylight sensor (light sensor) (model 203)
• Rain sensor (model 203 up to code 804 with code 345)
• Rain/light sensor (model 203 as of code 804 with code 345, model 209)
• Left interior protection transmitter and receiver (model 203.7 with code 882)
• Interior protection transmitter and receiver (model 203.0/2, 209 with code 882)
• Interior protection transmitter and receiver (slave) (model 209.4 with code 882)
• Left vanity mirror illumination (code 543)
• Right vanity mirror illumination (code 543)
• Rear dome lamp (except 209.4)

Thanks for any ideas or previous experience with this issue.