dudu-lai update
The G5 is not connected from canbus box, mean the canbus box not outputting 12v reverse signal. I connect the G5 to 12v reverse camera (truncking via 360 rear camera wire.
Very dissapointed with raise canbus that failed to provide basic trigger and information to the headunit, even though the signal has been decoded from can high and can low.
Really hope can reach to raise to ask about this and if can ask raise to provide more data like hvac, steering wheel angle, etc