I have to drill some holes in the frame anyway to attach the brake/shift cables, so one more hole to run a couple wires out under the seat should be fine. But in a different situation, that would be a good solution.I run one of my bikes with a dynamo at the front and another at the rear to save having that front to rear wire, which always seems to become visible somewhere. So a smaller power supply fore and aft, running whatever you want?