Hey mate, looks like the end of your question got cut off, but I think I know where you’re going.
I had a quick search and found
this website - if you’re worried about links, I’ve copied the body of the text here:
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Ok I have successfully installed the oem reverse camera to the Sygay 10.2 android radio
It ONLY requires 4 wires to be connected. This is for a 2015 evo x with touch screen radio without sat nav and NO Rockford Fosgate Amplifier.
Things you will need:
1) a male RCA jack
2) a 12v to 6v voltage step down converter, as the stock oem camera is 6v.
On the OEM harness locate the 8pin connector (C108) that plugs into the back of the radio.
PIN 1: Green Wire, VCC 6-7v. Connect the 12v to 6v converter, with the 12v side to the IGN switch On (yellow wire on the Sygay harness) and the 6v side to PIN1 green wire.
PIN 3: White Wire, Reverse sensing wire. Connect the Orange wire (Reverse CONT) on the Sygay harness to PIN 3.
PIN 6: Red Wire, Camera signal positive. Connect this to the positive of the male RCA jack
PIN 7: Shield Black Wire, Camera signal negative. Connect this to the negative of the male RCA jack.
Plug the male RCA jack into the Sygay female RCA jack which plugs into the back of the radio, and that's it. The wiring of the reverse camera is completed.
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Let us know how you go, and take some pictures along the way. Extra DIY info is always good
