Technical towing hook wiring

[vanta]

I own Fiat Tempra 1,6 SX 1993. Recently I installed towing hook for my trailer.
I don't know how to connect wires for signalization on the trailer. Is there some standardization or can someone tell me where to connect the wires from the connector on the hook.

 

[a73uk]

All the wiring is in the back of the handbook.

I just scanned it in case you dont have it.

 

[vanta]

thanks

Thank you very much a73uk, it will help me a lot