C3 Mk 2 front parking sensors

[Gambit]

Altough this is no longer available as a kit , I still have one on my car and am clue less as to when it should work.
A very help full supplier sent me a set of instalation instructions for a C3 Picasso- its wordless instalation instructions just pictures.
The connections to the car wiring are 3 wires on a plug red , black and grey connected to the back of the OBDC connector using paralleling connectors to existing wires the ground ie 0 volt goes to the body with a ring tag.
The Positive is labeled (+APC)-conn.DIAG,pos1 the control wire is labeled BSI conn.NR 16V-fil 220, pos. 6 which I assume is BSI connector NR16V pin 6

What I realy want to know is what the function of the pin the grey control wire is connected to or something that tells me when it should be functional under what conditions

[mickthemaverick]

What year is your car?

[Gambit]

car is a 2015 15 reg

[Gambit]

Hi

The car is a 2015 15 reg.
the instructions I have are for a Picasso C3 (A58) part number 16 102 791 80

[mickthemaverick]

Unfortunately I can't help with that then, I only have diagrams up to 2009. Hopefully another member will be able to, good luck.