I am going to fit an aftermarket reversing camera and monitor into a euro 5 ducato 180. There is wiring already in place with connector next to where the high level brake light is located. There are 5 wires into the eight pin connector, red, white, green, black, brown.

I have removed the headlining in the cab and have found the same connector, wires near where the courtesy light which I presume is for the fiat monitor. There is also the connector for a tachograph. I would be grateful if anyone can advise me which wires to tap into.

the installation seems a bit complicated ,can you show a picture of your connectors ? the best advice that you contact the vendor.