yes on most of the head units from blaupunkt, this connector is the preamp RCA out with remote amp on wire. i also saw these iso connectors online. but there is a note written that this may not work on OEM head units and these pins are not connected to the board in many cases. next time if you open your head unit can you make out from the board connections if these pins are active on out head units? they are not connected from the power IC.