Electrics?

Hi

Hoping someone on here has some experience with older van electrics.

I've some pics and questions.

Here we go:
Question 1: What are all these buttons for?

So from the top left there's the big orange one, the fat one, and the thin one. The thin one turns on the lights and the others don't seem to do anything noticeable. Though the diagrams above and below the fat one look to be travelling and parked up respectively.

Question 2: what is...

Electrics?

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