For those seeking relays, Jameco has on "special buy" sale for 99 cents (89 cents for quantities greater than 100, a 12-VDC coil SPDT relay with contact capacity of 16 amps. www.jameco.com and search there for "2179569 relay"
I bought 10 similar relays a month or so ago, and used them to set up an old LIonel gantry crane to travel along a Gargraves crane track, using 8-coonductor 24 gauge hookup wire from the controller, and microswitches to stop the travel. I'm going to do likewise for my other motorized accessories. Simplifies power distribution.
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