Thanks for the suggestions guys!
I tried using pins, and stables, but I couldn't get it - so I took care of the 12V cable in a different manner - I
*CuT IT OFf WITH A pAIR OF SCiSSORS*
(which made me feel good, after all the bleeding fingers the various pins and pliers were giving me)
And then calmly sleeved and Heatshrunk it.
Next I ripped apart an old Molex Fan adaptor, and took the male and female molex plugs from it (I actually purchased several more of these from a member here for exactly this purpose for the rest of the wires - they aren't here yet though).
I carefully soldered the cut wire ends into the pins taken from the molex plugs, and then attached the plugs themselves. Now the 12V cable is sleeved, *and* removable (although it is in use) !
One problem, and another question; I may have mixed up the two black, or the two yellow wires when I cut the 12V cord (it was late, and I labelled them above the cut-line...
).
Are the two yellow wires in the 12V plug the same? And are the two black wires the same? If, by mishappenstance, the two blacks (or two yellows) got switched, would bad things happen?
I plan to try the same thing with the AUX connector, although I need to wait untill the plugs I bought from a member here arrive, because it has 6 wires, and will require 2 molex plugs.
Attached is a picture of what I did. Sorry for the very low picture quality - you cannot even see the sleeved part, only the Molex heads that I attached to the bare wires that were cut.