I don't know of our frames are the same, but my frame has a square 'tube' under the tank that the harness goes thru. Trying to fish a single wire through that small hole without lifting the tank would be problematic. I've managed to use a long wire tire and fish it around the top frame rail to hold a couple of wires until I get around to actually pulling the tank to do it correctly.
I have also run a larger gauge wire along the lower frame rail to power a connection block that's mounted in the chin spoiler. That wire will be relocated along with the ones mentioned above.
You can just see the red wire between the two pipes in this picture.