OK ! think I know the answer but i figured I had better ask first I am installing the peripheral bose adapter (NISAH4N) I noticed when connecting the speaker wires to the adapter that after i made the obvious connections to the speakers there is an extra wire also labeled (Left front positive) I assume it is to be included with the other left front poitive on the radio side with the other two already?? Basically why is there 2 left front positives?

 

So noone in here has installed the adapter in a 5th gen max?? Help