Jim- for biwiring to work you need two separate cables. Putting separate connectors on what is essentially a twisted pair will not provide any performance enhancement. You need to separate, by a few inches, the stronger magnetic field produced by the bass current, from the weaker magnetic field producted by the tweeter / mids current. You can only do this by separating the wires. In your case, the Kimber 8TC is a worst case scenario as the wires are twisted together.
As always, IMH(but educated)O
Russ