So a while back i setup an aftermarket touchscreen radio that has reverse cam support but my car harness does not have a reverse signal wire and the new radio harness does, of course. Where does the reverse signal come from on the car? I think im overthinking it since im an IT and in the IT world, stuff like this is different. I have researched about it and some people are hooking it up to the reverse light. Is it as simple as that? i thought there was some box with wires in the car that had all these switches or whatever to do different things.
I just want to make sure this would work before i do anything.
Vehicle i have is a Nissan Versa 2014 Sedan
Thanks for the help!