I have 2 radios I bought on ebay, one is in my Rav 4 the other in my Mr2. So I'm trying to make the RVC work in the Mr2 just like it does in my Rav4. The best I can tell is that I just need to use my reversing lights to trigger the reverse signal. I know how to get to the hidden menu where I can test that single. If I put the car in reverse it does says ON and goes back to OFF when out of reverse. Best I can tell I get 6 volts for the camera and I did make the correct cable. I also made sure to get a Rav4 cam. but the display stays in normal radio function when I go to reverse. I thought maybe the cam had to be hooked up and that is not helping. Could there be anything else I missed.