For the couple of bikes where I have installed the brakes prior to getting the connectors dealt with (no longer an issue as noted above) I have taken a bit of silicone tape and just taped them to the brake cable. The wires follow the brake cables (contrary to claims above) so its pretty much unnoticeable. I just did the plug and not the entire wire+plug.
On the wire direction coming out of the levers, I snapped a pic on a bike yesterday. The wires follow the direction of the lines, not sticking out front like an earlier post claimed.