Hi,
That is going to drive you crazy. There are so many wires related to the OEM design. What I would suggest is to simply gain power via a backup light bulb. When you place the vehicle in reverse, the backup lamps turn on which will power the unit. At least that is how I've seen them done on other vehicles.
By chance, do you have the wiring schematic for the new one? If so, could you upload it so I can see what they are recommending?
Let me know.
Joe
Friday, August 4th, 2023 AT 8:06 PM