Need Help with factory 2011 LSV MB Quart Stereo

[philwsailz]

Phil,
I retraced all of the wiring and everything looks good. It still make the noise, only when the engine is running or when I first turn the key on. Any other suggestions?

Thanks,

Rather than retracing the wiring to the head unit did you re-wire the head unit?

You need to move the head unit power wire from the helm power wiring as I shared in my previous post. The power and ground wireat the helm are dirty and full of noise and almost always at a different voltage potential than the amplifiers... If your head unit is still connected to the helm power wiring instead of being moved to the big amp or the distribution block, you will have noise.
What you hear when you first turn the key on is likely noise from the computer(s) and the fuel pump, indicating you have a ground-plane issue.

Phil
Kicker