Ho Train Track Wiring On Utube. Solder rail joints between feeders andor at least one feeder each rail length. This can be done by inserting insulated rail joiners on each rail at each end of the reversing section.
Wiring LEDs with dropping reisistors for headlights or other lighting applications in model train locomotives. 10 gauge 14 gauge solid conduit wire 14 gauge more than sufficient for 100 feet run in HO 3 feet OK between feeds closer on smaller code track. This little trick can be a great move at the end of the line.
The oval within an oval presents no problem.
HO scale layout will need the least amount of wiring S or O scales will need double compared to an HO scale. If the tracks are long enough the wye can also double as a run-around track. Bus wire is a larger gauge o. Find out how shower curtain hooks are a.