Back-up camera wring location help???

[Chadabear]

I have a 2012 SR5 that came with no Nav, touch screen, or anything but basic stereo...
I acquired a hu from a buddy with a 2016, entune-nav-bluetooth...yada..yada..
I was able to get all of the components working properly with adaptor plugs, but have been looking for the correct signal input pin for the back-up camera. I have found the 6v power supply that the radio puts out to the camera, but for the life of me can not get the right pinout to locate the Video input that actully turns the screen off, and powers up the b/u camera mode. I have extensively searched every thread I could find here, and pinout sites, tried other plug adaptors with no success. HELP

 

[Superjet]

Aftermarket cameras are 12v, not 6v.

Hook up aftermarket cam to 12v switch power (not reverse light power) and ground. Use the below plug to plug it into the OEM radio.

https://www.bestbuy.com/site/axxess...toyota-vehicles-black/5803724.p?skuId=5803724

The radio will see reverse on it's own already. Also the radio needs to see the image of the camera on start up when the key is first turned on to know it needs to switch over in reverse. That is what the aftermarket camera goes to switched power.