SW wiring

Classic Toy Trains Forum
1

Have an sw but no instruction sheet. If combination bu gives 19v is that fixed?Is AU19 volt variable? Similar for cu and du but 14 volts?

And u posts linked internally so that only one of them needs a wire to another transformer for coordinating use after polarity match?

2

A-U is 19 volts variable.

B-U is 19 volts fixed.

C-U is 14 volts fixed.

D-U is 19 volts variable.

Larry