Reversing Camera connection
I have purchased a reversing mirror with front and back cameras. I have it all installed apart from the rear camera which I believe has to be connected to reversing bulb so when reverse has been selected on screen should show arrows and lines for parking. Is this just a matter of connecting to the 2 wires leading to the bulb (black, green/yellow) or is there more to it. Qashqai 2008 diesel.