HideMe

Hi there, not to long ago I purchased a 2002 s55 AMG. The car has been great but I want a more modern radio for GPS and Bluetooth. I purchased a aftermarket radio to replace the command 2.5 that's in the car. I also purchased a D2B fiber optic decoder for the radio. I'm having issues getting sound out. I am able to get sound out if I manually wake-up the D2B by removing and interring the fiber optic into the decoder. So far I have removed the cd changer from the loop and wired the D2B wake-up line into pin 7 of C2 connector. I have ACC wired up to the cigaret lighter and my 12v and ground wired up to C-A to pins 7 and 8. When I turn the car to acc I can see the light from the amp turn off and on. Has anyone done a install like this for a w220 that can guide me to figure out why I have no sound.