Disco 2 Towing electrics

Afternoon all. I’m after some advice regarding wiring a 7s socket on my 2002 Td5. It already has the 7N socket fitted. If anyone had got an idiots guide are can direct me to a step by step guide I’d be grateful. Thanks

View attachment 197030 View attachment 197024 https://www.towbarandtrailercentre.com/wiring-diagrams

Thanks.

That just looks like the 12N connections. You need a permanent live, ignition switched live, and 2 earths for the 12S fridge / battery charging (dependent on the year of the caravan). I ran 2 heavy duty wires along the chassis from the engine compartment, secured with cable ties.

I have seen someone say there is a 30 amp supply in the rear quarter but I haven't come across it.