George,

to wire Vießmann signals to Fleischmann switches, you can use the following connexions:

Blue wire with red sleeve - red terminal on switch ('stop' aspect)
Blue wire with green sleeve - green terminal on switch ('go' aspect)
Brown wire with diode - 0V AC or 'ground' (lighting)
Yellow wire with diode - ~16V AC (lighting)
Yellow wire - ~16V AC (assuming the side of the switch is connected to 0V AC or 'ground')
Red wires - not used, tie up out of the way (these are for controlling track power in the section before the signal; the problem is it stops trains in both directions, so I leave them out)

As a general rule brown seems to be AC ground or earth and yellow is the 'phase' or ~16 V. They connect to the AC terminals on your transformer; the same ones used to power lights or drive turnouts. Not sure if Brawa signals follow the same scheme, but their light bulbs use yellow and brown so they might.

If you have an older Vießmann signal, there are only six wires and the colour scheme is different. I can explain the differences if necessary.

HTH,

Paul, of (formerly Prussian-occupied) Lower Saxony