The Relay Box and other schematics

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This diagram shows the contents of the relay box including the connectors, relays for main power, horn, and train-line, plus a hand wired circuit board.

The Hand Wired Circuit Board

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Once inside the relay box, the Bell/Horn signal is split into separate drivers. The bell driver energizes the bell for about 20ms every second. The horn driver is designed to drive a relay.

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The headlight driver is also split inside the relay box. A low level on Mars/Head resets the timers forcing both head lamps on. A high level allows the timers to operate causing them to flash alternately.

Chassis Lighting

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Service lights are on the trainline harness. The trainline wires are for brakes for the entire train. There is a service light on each side of both trucks.

The OLD Handheld Controller

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