I love watching Garage 54 where a Russian mechanic makes some really cool experiments and outrageous builds out of old Ladas. The cars are really simple which makes them very dependable. I would love to have a Niva, but I have never seen any Ladas where I live.

Here is the link https://www.youtube.com/channel/UCCydCOEgfcXAQnkRaLCTsAQ

It doesn't appear that you asked a question. But if you are having trouble finding the brake switch location, it is on the brake pedal assembly.

I found a manual for the Lada. The year of the manual if 1999, but your vehicle may be very similar.
http://www.iw1axr.eu/Manuali_off/Lada%20Niva%20Service%20Manual(ENG).pdf

Good Luck.