I installed the rcd330 plus in my 2015 passat, used a scosch crt-vw01 to retain the factory camera and the radio won’t even turn on. Tried changing the fuse, disconnecting battery, disconnecting the scosch harness completely, no change. Help please. I used the brown wire for ground, red with yellow stripe for 12V, and tapped off the reverse light for the reverse signal.