I'm a new Bongo owner and just getting to grips with it

I have a newbie question.
I've hooked up the EHU cable to test sockets, lights, fridge, etc.
The fridge sprung in to life, but the socket and lights didn't work.
I've checked all the fuses, and they all look good.
Any ideas?
State:
Ignition off
Hookup cable connected
Any help appreciated