Anytime-On Rear View Camera Mod

Anyone do a anytime on rear cam mod yet? I did this on my 13 4Runner and used it often. I would be interested if anyone has any info on the back of the headunit hookups/wires.

 

I tried. Ended up with a restraining order.

 

I have not, but plan on it when I get my truck. I have sketched out a schematic and will try to post on a few days to get people's opinion on if to will work who are better electrical engineers than me....

I also will be putting in a front camera.

Basically for anytime on, install a relay; one side provides constant 12 v power, one side provides the stock reverse 12 v power. Note that this may not provide real "full time" on as the Entune may default to shutting down the image after 5, 10, or 15 minutes.