Grand C4 Picasso 2017 rear lights wiring diagram

[bkod]

Hi. I've paid for technical documentation access on the servicebox but after clicking on diagrams only an empty window opens..
Does anyone know how to access electrical diagrams nowadays?
Can anyone help me with identifing lights wires in the rear harness?
Grand c4 Picasso 2017
Thanks

[wheeler]

Is this for a towbar?
The easiest way is probably just with a test lamp or voltmeter & get someone to operate the lights.

[bkod]

Well, yes... Wanted to avoid that... Canbus, many other devices on that harness... Looks like I have no choice...