I've got that stomach flu thing so didn't get much done yet, either puke or crap every time I do much bending about. But anyway, managed to find the old parts, so have a spare switch that seems good. Frigging annoying part to get to, have to remove steering wheel, half drop steering column, pull multifunction switch etc etc. Been poring over wiring diagrams and can't see what else it can be unless it's a short somewhere. Two really annoying things about the Ford FSM I've got, one, the professional test procedures say "if it makes contact it's good" ... orly???
and two, the wiring diagrams are laid out on a per system basis meaning there's not one that gives you all the frigging connections to one component, it's on one diagram for the starting system, one diagram for the engine, one diagram for the accessory power
so it's hard to figure exactly what all the particular wires are connected to, and where things are spliced into it.
Anyway, hoping tomorrow I can bend down under the column and not lose my lunch...