Technical reverse camera

[arekp]

I'm installing a new head unit in 2015 500X 1.4L, but the harness doesn't have input for factory fitted reverse camera.

Using a voltmeter on the reverse camera plug, I found the grey & green are activated when in reverse (0 Volts when in neutral):
grey measures 1.8V
green is 1.6V
red is 12V
both black wires are ground
blue shows 9 V with key turned to ACC and -12V when the key is out

Does anyone know which wire is the signal and which is the return, when compared to RCA plug?

 

[s130]

Best I can come up with at this time is see attached.

6 pins like your connector so if you can access the camera connector you can trace back to the connector your a showing.

 

[chris3234]

I'm installing a new head unit in 2015 500X 1.4L, but the harness doesn't have input for factory fitted reverse camera.

Using a voltmeter on the reverse camera plug, I found the grey & green are activated when in reverse (0 Volts when in neutral):
grey measures 1.8V
green is 1.6V
red is 12V
both black wires are ground
blue shows 9 V with key turned to ACC and -12V when the key is out

View attachment 400249

Does anyone know which wire is the signal and which is the return, when compared to RCA plug?

View attachment 400250

Looking bat the wiring I doubt any of them are for the camera's signal as they aren't shielded in anyway

 

[arekp]

Thanks @s130: what does this mean in the text under the picture "rear view camera communicates with BCM via LIN2"
I'm guessing LIN2 means Line 2 and BCM means Body Control Module
I don't think it's the reverse signal as the voltages don't go up when reverse is engaged

@chris3234, the continuity setting on voltmeter shows they are camera signal wires: