Should be out driving on this fine bank holiday but am still building, damn enthusiasm where did you go!?

I am trying to wire up my savage switches and am struggling with the Brake Warning and Horn. I managed the Fog and Fan with the help of the search function. Can any of you guys help with the Brake and Horn please. I'm not too good with electrickery so an idiots guide would be appreciated.
Thanks

Handbrake Wiring Diagram

means bugger all to me, but its from Worx (steves) photo archive.

Its often used and works fine in my car

What a dumbass. Brake warning had nothing to do with wiring, float was stuck in cap so light was permanently on.
Thanks for the piccy though. Just the Horn to sort now

SORTED BOTH!

Thanks for your reply Dangle