Really all you need is two infrared lights spaced the same distance as the two in the sensor bar. The sensor bar does not transmit data to the Wii, the remote does that. The only thing the cord does is power the sensor bar.
Also, having two sensor bars is a bad idea. Your remote might pick up the wrong one, thus causing unwanted results. As far as I can tell, the simple solution would be to just leave your sensor bar under your tv or change the settings.