problem with installation of jb4 mercedes w205 c300 2016
 

Greetings Group

I have a problem with the installation of a jb4 in a mercedes w205 c300 2016.
the problem is that when I install the jb4 it takes time to start and after the engine starts it fails and smells like a lot of gasoline.
It also does not let me connect through the Bluetooth application.
I would like to know if this has happened to someone else and how to solve it.
thanks . lI'm going to put the photos of where you connect the jb4, the only cable that did not connect was the brown one.

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