These adapters enable you to integrate a car radio with iso connection in the vehicle with oem factory cabling car radio adapter cable function ignition off radio slows down in order to protect the car battery the can bus adapter goes in sleep mode and switches onoff after about 40 s this adapter is needed when a non oem device is installed in the vehicle the operating voltage is tapped at the fuse box antenna adapter function this adapter enables the connection of a car radio of a di