Ha! I did try to warn you. Glad you managed to obtain replacements from Kiss.
Mine is in the loft at the moment, so will have a look when next up there but this may be awhile. I don't think there's anything too complex about the switches - I recall one is wheel pickup, another switches to pantograph, and I believe the last isolates the traction motors so that you can leave it in a siding with the lights on. But I may be wrong on the last one!
I also recall that the instructions weren't actually too specific and I ended up setting my switches by trial and error (you can't do any damage by this method). Once I had got the loco doing what I wanted it to, I then put a tiny paint blob (from one of those silver paint fineline marker pens) against the base of each switch to remind me which way it should be set - as it is guaranteed that when you lift the loco from the rails, you will put your fingers under the loco at precisely the position of the switches and move one or more!