man i can't believe no one said to try it this way:
ok, get a length of string and an air hose or a good set of lungs.
tape/close up both ends of the bars, and the opposing side wire hole. leave the port that the wires are going to come out of open.
stuff the string into the hole that the wires are going to go inside of.
blow air through the bars at that hole.
the air has no where else to go but out. and guess where the string is going to come out of?
the hole you need the wires to come out of!!
ok, tie the string aroud the wires and pull them though.
ta da!!!!