I basically followed the stock wiring harness under the gas tank and the air box and then up behind the headlight. When running the wires, I used some thick (14 Gage?) wire and actually feed that from above the airbox, and poked out through from front to back, then I used that to tape the actual charger wires to it and pull it through. If I were to do it again though, I would just take off the tank and airbox and route everything underneath. It's actually really easy to take the tank off as long as you're low on fuel.
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