I just completed this mod. I started Friday evening, tearing down the bars, taking them off and snaking the wiring through the bars. That part was relatively easy.
The second part, making the wiring extensions, was a lot more work but still not hard -- this was actually kind of fun as I don't get a lot of chances to do soldering and shrink wrapping.
I love the finished look with using shrink wrap!
Dealing with the wiring harness on the bike and figuring out which colored wires went together was about 80% logical, wire colors matched for the most part but it finally came down to a few wires coming from the bar controls that had NO OBVIOUS matching wire in the harness.
I know I know... I TOTALLY should have taken a picture of the stock connections and/or labeled everything to make sure they got back together just right.
As it was, I got everything working except my high beams. I blew the signal fuse in the process but all is back together and the bars look much cleaner!
Thanks Redhorse for the pictures and instructions! They were VERY helpful. 
Does anyone know if there is a fuse specific to the headlight high beam? Probably not, but I hate to think that two of the 17 wires are currently mixed up and I need to go through trial-and-error (and a lot of blown fuses) to figure out which ones.
(although I put quick disconnects in-line with my extensions so this should make it a bit easier).
Notes for others attempting this mod:
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TAKE A PICTURE OF THE STOCK BAR CONTROL/HARNESS CONNECTORS (or label every with 1-17 on each side).
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I used quick connects between the bar control wires and the wire extensions to facilitate easier but-splices and allow me to quickly switch wires around if I get this screwed up. Just make sure to stagger the wire connections so not all the quick disconnects are together. This made it a little tough to fit through the braided hose (I think I used 1/4" on each side).
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After cutting the braided hose, I heated the ends to slow the fraying. This did a great job as my first run-though ended us mangling the braided hose so much (with the pulling and the pushing) I had to start over.
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There is a link on Radhorse's instruction for some Hitachi-style connectors. These are great! Get two sets though as I barely had enough with the number of ends I ended up mangling. I ended up replacing the entire stock connectors with these.
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Make sure to run the left bar control wires behind the tach/headlight assemblies before reconnecting. I had to take them back off to get the lefthand wires to the right side for entry into the headlight assembly.
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As I said above, I don't do a lot of soldering but I did learn the benefits of using good flux. With this stuff applied, the solder just gets sucked into the wire and doesn't bead on top.
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Sears (as well as others) sells a good butane soldering iron. The top screws off and the unit acts as a great heat shring heater. It sells for about $10 but was well worth the expense!
I got my spring compressor in so the Baron 930 lb. spring and the KrankVent are the next mods on deck. I also expect my Short Slashers in next Tuesday so those will be on before too long as well.
Wish me luck!
:: Eric :: 2007 Charcoal Gray/Silver Warrior
COMPLETED Mods
Samson Short Slashers with Big City Thunder baffles (6" inside),AIS block-off, Churchkey's V-BAK,Akitadog's Coil & sensor relocation, Baron 31-tooth steel pulley, PCS lowering kit, Baron Bomber Bars (internally wired), removed tank and tail badging/logos, Clear Alternatives' integrated tail lights (with Radiantz Roach plate light), removed stock mirrors and installed Motrax bar-end mirrors, inner fender clean-up, removed stock exhaust brackets, relocated rear brake reservoir, shaved left motor mount, steel-braided fuel line and installed Ferracci dry break
PLANNED Mods
Baron 930 lb. spring, PC-III (USB) with custom dyno tune, 240 rear end, hidden rear brake caliper, remove rear brake rotor heat shield