Having moved numerous pipe organs, I have used several methods to
retain connection information.

The first is when the cables will not have to be pulled through a
conduit.  Heavily duct-tape the cable as it leaves the spreader-board
connection.  Use two layers of tape, one inside, one outside.  Unsolder
the connections.  The tape's aggressive adhesive will hold well and
should preserve the order in which the wires were removed.  Once they
are off, cover them with a sheath made of heavy corrugated cardboard,
folded to eliminate pressure on the bare wire ends.  Use the duct tape
to hold the sheath in place.

If the cables have to be pulled through a conduit, you can often cut
the spreader boards themselves.  Many manufacturers grouped their
spreader connections in twelve's, leaving a larger space between each
group.  The boards may be cut with a backsaw between the twelve-note
groups and taped up after desoldering, and often may be pulled through
the conduits without damage, as the short pieces will turn the rela-
tively gentle bends used in the main cable runs.  Then, the spreader
boards may be reassembled easily at reinstallation.

Now, having said that, it should also be said that the National
Electrical Code (Article 650) will not permit the use of organs wired
with the old style double cotton-covered wire.  (Electro-pneumatic
action organs built after about the mid-seventies are probably NEC-
compliant).  Only thermoplastic or thermosetting insulation is allowed.
Reinstallation requires recabling, because if anything should go wrong
with the old cables and cause a fire, the building's insurance would
likely be voided.

Dave Vincent