This G11 addition looks great and works well.
I bought a standard, 12' black good quality coiled phone cable and
cut it into three pieces. One about half the length and one about 5"
long (coiled size) and put the remainder in the spare parts box. The
longer is for the Dec encoder since it moves the most. One end of
each fits nicely into a RJ-45 connector side-by-side (8 contacts) and
the other ends each go to a RJ-14 connector (6 contacts). You will
need to check your current cable to see which one goes to which side
of the RJ-45 and the direction of the RJ-14.
You will need to straighten out the ends that were in the middle of
the coil a bit (bend opposite direction by hand and hold for a while).
This solves two problems, first the coiled cables don't get in the
way. Second, the shorter cable prevents you from plugging the cables
into the wrong encoder (but I sure that never happened to you).
If you know anyone who does computer networking that will probably
have the crimper and the ends. (or about $35 from Radio Shack for a
combo crimper + plastic RJ-XX ends)
Good luck.
PS: Does anyone know of a source of 6 conductor black COILED cable
for making spare motor cables?