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It has a pulse!

Wiring is probably the most complex of all the organ’s “operating systems.”  Getting all 61 notes of every stop correctly wired to its respective pipe is an amazing task.  Throw in interdivisional couplers, sub and super couplers, piston and capture action…well, you get the idea.

The picture below is the relay board of the newly refurbished console for Grace Episcopal Church, Anniston, Alabama.  A nearly identical board is located in the organ chamber.  For the organ to work properly, those separate relay boards must “talk” to each other.  That umbilical-like mass of cables coming from the console’s rear is how they do it.