Electrics...

[Frenchie]

They're Gaugemaster mini toggle switches and I doubt that all ten of them have stopped working.
There's nothing across the terminals. That's the point. The track leads are connected to the centre terminal and the leads from the controller to the outer terminals with a common return direct from track to controller.
There is no current passing through the switches. By-pass the switchboard and everything's fine.

[Ray Haddad]

Is this a failure in a formerly working system or a newly wired system?

[Malc]

A drawing always helps and sometimes when you've done it, the answer just pops up.

[Bealman]

I can't agree enough with that. And I'm talking the old fashioned way - pencil on paper. I'd  draw a line from point A to point B then have a long think, realise it wouldn't work, and rub it out or just scribble it out.

I designed much of the signalling on the B&CE on the back of a beer coaster while enjoying same!

Also, (though not so much these days) I really don't mind the soldering and wiring malarky, and would often solder in a wire, stick me head up and see if a signal was green. If red or not on at all, back under I'd go and solder away 'til I got it to do what I wanted!

Aye, thems was the days.... :'(

[Frenchie]

1. It's new wiring but the switches were working perfectly when they were taken off the last layout. Once I get down to it this morning I'm going to take another switch and try various combinations using just that switch.
2. ... which is a three-dimensional version of pencil on paper, I reckon, Malc and Bealman! But that's my usual system. Sit and look at it and see what's not right.
Trouble is, I've done that!
I'll report on latest tests later on. Thanks for the suggestions.

[Bealman]

If the panel was fine fault must lie between it and layout?

Or on the layout?

George

[Frenchie]

No. If I by-pass the switches everything works except for one link which I will need to investigate further.
The problem seems to be at the switches themselves.
That said ... it didn't help that for a while I was assuming 'up' when the connection should have been 'down' (never could tell back from front standing on my head!) but that was only part of the problem since I was wiggling the switches to cover all possibilities.
Half of them have actually started working without any further assistance from me. Sod's Law at least is in full working order!