I've seen builds where all the wiring was run into the frame through some holes drilled in it. Seemed to me to be a bit much. I just use lots of smal zip ties to secure wires to any existing cable sheath, and then use little velcro strips to secure wires to the frame where there is nothing else handy. To me it looks fine. The wires are in a sheath, so I don't worry about chafing much. My Ev global came with some cool little sheaths that were like a spiral of stiff plastic. They work great for bundling a few wires, like around the handlbars. I think you can get that stuff in computer stores, maybe radio shack, for bundling computer wires.