I installed a backup camera, it works, however it will only come on when the camera is turned on the head unit. I am probably doing something wrong, or got a setting messed up, just need some help.

Thanks!

Duncan

needs a wire from the reversing light to the stereo to tell it to switch the display to reversing camera, but I cant remember which as it was last year when I had the same problem

(violet/white) on my stereo