Originally Posted by Pete'sMH
I’d look for it at the radio. Ford may use fancy canbus wiring but Axerra certainly doesn’t. There has to be a signal wire that tells your radio to switch on the camera view. Should be printed on the radio chassis or readily available online.
Yup I thought that as well, but apparently they do use canbus, and there is a canbus relay axxera as well. If i would disconnect the can tx/rx going into the axxera, none of trigger would work. And the axxera skipped all the triggers wiring. They do this to save wiring as well easy to troubleshoot i guess.
Ford engine has can low/high whixh going into an axxera relay canbus then signal left/right going into there as well but no reverse, and coming out the relay is can tx/RX port of axxera, that is how they wiring moving forward for newer model i think.
I found a relay number 5 in aux box under power distribution box engine compartment. It controlled the back light reverse, i might tap into it. I still could not find a fuse for the reverse though.