Peugeot 308 wiring towbar

[tfi016304]

I have bought a tow-bar for my 58 Peugeot 308 it came with the 12s and 12n connections and a split charge relay 30A.
There are some connections no the rear left hand side of the car at the rear light. are these tow-bar wiring connections?

A electrical diagram would be great.

Thanks.:D

[xOxOx]

As I remember, I had to wire Dirct to the rear lights. Taking the wiring though the space between the boot and the bumper.