I kind of made it up as I went along.
(Read the instructions? Me? That's too easy. I LIKE doing things the hard way)
I took the dykes to the midpoint of the wires, and clipped them in half, then added a length of whatever color wire I had laying around, (all one color would have worked too - not a problem) Put a little masking or scotch tape on each wire to record the color codes. Wrap the color code markers in a wee plastic bag, then wrap the entire length of wire with Scotch #33+ black tape (accept no substitutes) - wrap downhill first, then uphill second, so when you shove the wires down the bars, the tape won't tear. Wipe the tape down with a little liquid Ivory dish soap, or not, (Ivory has no alcohol) then shove the wires down the bars, expose the color code markers, then lengthen the downhill side.
The trick to the color code tape is to leave no adhesive exposed. It can stick to other tapes and obscure your writing when you pull the tape apart. I wrapped a length of masking tape evenly around each wire with a little excess on both sides (like a tab) and cut the excess with scissors.
It all went smooth as silk until I hit the the red black to black red mix up
Another tip - Radio Shack sells heat shrink that is shiny plastic - it's crap.