I am using GRJ's new design and was think of running the Led series not parallel. Sorry not making clear in the question. Does anyone have a picture or diagram of how the hook would look like once having the PTC installed? Since this a problem will car in this design I might as well wire up the 1950's Lionel Morris and Essex passenger cars.
You just put the PTC in the wire between the two roller pickups. You can wire the power to the LED module from either side of the PTC.
There was a recent thread on DCC Specialties electronic circuit breakers. It looks like it will protect every thing on the track.
This is not a replacement for what we're discussing. Besides, what happens if you run something on a different layout, even if that were true? The wire protection is for a higher resistance short where you don't draw enough to trip the breaker, but you do draw enough to cook the wire. Many cars have pretty small wiring for the lighting.
