I'm getting ready to convert an "off road only" XR650R to street legal. I initially thought that I would just get one of the all inclusive kits from Baja Designs or Dakar Sport. I just wasn't sold on the overall looks of either of them and thought things like, "well I like that headlight, and that other tailight, but I like those turn signals..."
I finally stumbled across this after a lot of searching:
wirediagram DSA Wire Harness with Key Switch
It is an all inclusive wiring harness that is made in America with mil spec connectors. You can get it packaged with a variety of options. So now I'm going to match the Acerbis headlight that I like with the Baja Designs LED tailight and a different set of turn signals that I prefer. I'm going to get the wiring harness option with the flasher, horn, and handlbar switch already included and wired in. I'll wire the stator output to a regulator/rectifier, then the reg/rec to a battery, then connect the wiring harness to the battery so that the bike is running completely off of 12V DC. The total cost of the harness, headlight, turn signals, reg/rec, and battery adds up to less than the cost of the Baja Designs kit.