Try this one. This is where I got mine. You have to put the part number in yourself.
New Part Number for Replacement Cable
--------------------------------------------------------------------------------
Best buy no longer stocks the cable, as they so politely informed me today. I searched our part number and came upon
http://www.pacparts.com
the original part number
J84-0121-12
seems to be discontinued, and there is a newer, and hopefully more reliable replacement part number
J86-0021-05
From what I read on the other forum, you can also purchase a new connector plate instead of reusing your old one, I will ask pacparts about this when I call them on Tuesday.
I am going to be ordering 2 of these and seeing if it is the same part. Great how to, thanks for the time and effort.
search for the
KDCMP919
and there is a whole bunch of parts available, on back order and discontinued part numbers cross referenced to newer part numbers, excellent.