Wiring up a model train layout in DC (direct current) is a great way to keep costs down and learn some basic electronics. We examine our wiring diagram and explain how triple pole double throw switches are used to power the trains and bipolar LEDs.
This design will sit beneath a sheet of clear 3mm PVC. The PVC has holes machined for switches and lights. The overall size of the control box will be 210mm x 297mm. The strategy for A4 size was for easy reprinting of the design. The PVC will be supported on a frame with 9 screws that can hinge open for wiring access.
Video 3 in the YouTube series shows how we fixed a loco with intermittent connection issues.