Tow Bar electric problem

[red4racing]

Hi, I'm in the UK and have a question about the ignition controlled output available on pin 9 of the 13 pin socket with the OEM tow bar electrics. i want to be able to supply a battery on my trailer which i use to drive a 12V winch!

presenty this is not live with respect to (ground) the fuse in the Right hand side of the trunk is a good fuse 78.

becase this is supposed to be an ignition controlled circuit i dont know if i am missing a relay in the fuse box?

has anybody any ideas on this one for me or can they identify what the 3 relays are in this area (i have 2 in their holders and space for one)

thanks

Dario

[red4racing]

bump!