Great thank for info!!

My original BM is already repaired with amp change. Becker amps deleted. Althow deleted some condersors and on its plase doldered wires for amp in's.
It was fine for the first, but it become shutting off. I opened and saw that + is in the air. So i soldered it. Next one channel stoped working , i soldered. And than one channell started scrapping and make loud scretch nouse. That was last point and i decided to change it. And found a man in another city selling BM back and he that aux and bt should work like mine.
And after i purchased his phone number became inactive.
I sutisfied with sound quality withbm back but want aux. i have mine aux bluetooth converter, so want to play music this way.