I am attempting to replace the oem radio in my 300sd with a blauplunkt cd player. I am running into two problems.

First, the power plug shell to the radio opened up and the wires popped out. The slots where the wires are held in the case are labeled with a 1 2,3, and 4. Does anyone know which wires belong in which plug slot?

Second, I cannot seem to get enough 12V power to keep the radio's lcd displays lit let alone power the cd. When I plug it in, the lcd disply is bold but over the next 20 seconds it will fade away. I can take the cd player and put it in another car and it works fine. Any thoughts?

Lastly, what effect on the car's alarm system does having a non oem radio installed in the car?

Thanks in advance.