Review on 🔌 XTRONS Optical Fiber Head Unit Replacement Decoder: Enhance Your Mercedes-Benz ML/GL/R Series by Mike Phillips

For some reason mine works fine the first time it connects to the car after the car is turned off. It won't turn back on unless you disconnect the harness at the back and manually reconnect it, otherwise you'll leave the ACC and B+ wires connected to b+ at all times. Maybe mine is defective, I don't know, I hope they send me another one because I don't want to drain my battery every day just to plug this in