I attempted this upgrade yesterday and failed miserably. I started by tapping into the wires on the connector and connecting the rca cable (at this point I did not have the backup camera installed). When I started the car, I got an "i-key" failure warning and the headlights flashed.
I was hoping to see the screen turn blank waiting for a camera input when I put it in reverse, but it did not work...
I got spooked and ended up reversing all of the changes I made.
When looking at the plug connector, the wires to be tapped are on the right-hand side (looking at the pins) with the connector snap-in on top, correct?
I think I am going to give this up before I screw up my wiring any further.
Sorry for it not working your first time, but don't give up, trust me, it is easy.......
First, we are working on the harness/wire side of the connector, not the front/face of the connector. Looking from the back, on the bottom, three pins over from the right, is a black wire. Cut that wire about 2" from the connector. Then, on the wire coming out from the connector that you cut, ground that wire to the frame and tape off the other wire as it is not used anymore. Put everything back together loosely and put the car into RUN mode. Engage the parking brake and place into reverse. The screen should go black, the reference lines will be there. If so, then continue.
On the other two wires, cut those about 2" from the connector. On the wires that you cut coming from the harness, tape them separately and tape them off and away. Connect the top corner wire, # 59, to the center RCA prong and the lower corner wire, # 60, to the outside RCA prong.
Then, coming from the camera you bought, connect the power wire to the reverse lights and the ground wire to a ground.
WAH-LA, it will work........
If you have any questions, please take a picture of what you have done and I will help from there.