I just bought a small Trailer (Erde 102). It apparently has a 7 pin plug to connect the electrics.

I have a factory fit towbar (detachable) on my MK6 Golf. What exactly do I need to connect the two?

I am confused by 12, 13 pin and 7 pin adapters

Any help appreciated. I expect as I am in a hurry I will have to got to one of the local suppliers (Halfords etc) tomorrow to pick one up.

Also need to source a number plate on a Sunday! - Kwik Fit are supposed to do them, but grateful if anyone can suggest another chain that might do them.