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How do I wire the different elements of an XVB signal tower?

Principle: The  terminal numbers correspond to the location of the illuminated lens unit:  Example: To illuminate lens unit  number 4 , terminals 4 and C on the terminal block must be supplied with the appropriate supply voltage for the elements.

Diagram of the internal wiring (cannot be altered):

Please Note: All elements MUST be of same voltage.
Different voltages must not be mixed in the same tower

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