Hi does anyone know where I can find a diagram to wire in the 12s socket so I can charge my caravan fridge on the move pls :-)

Are you looking for a generic diagram, or one that is specific to the Octavia?

The 12s soclet has 1 permanent live and 2 ignition lives along with reverse lights and 2 earths,

Think your best running 2 wires from fuse box behind headlight switch and then split the ignition live at the back into 2, one for battery charging and other for fridge

Cheers guys think ive got it now. Just bought a split charge relay. Theres a permanent live to the relay then it splits to charge the fridge and battery.

Just double check that the connection severs after you remove the keys once you have fitted it. You don't want the fridge flattening your battery if you pull into a service area for a break.