locofan

I've just managed to wire up a Berko 2-aspect colour light signal on my n gauge layout and although I found it confusing at first I soon mastered it and I thought I'd share the method with you all. The wire with a resistor attached goes to the negative terminal of a 12 volt power supply. Next the red and green wires are attached to either ends of an on-on switch (there are three terminals). The middle terminal of the switch goes on to the positive terminal of the 12 volt power supply.