Your wii sensor bar's wires are too short? It takes too much room?
No problem! You can make wireless wii sensor bar instead thinking!
So what you need:
Battery holder for one AA-battery IR-led Slide switch Some wire
So carefully now, left side is positive and right negative. Tape the led on top of the battery holder. Connect positive power to led's anode. Now tape the switch to back of the battery holder. Connect the left pin of the switch to led's cathode. Then you connect negative power to middle pin of the switch. Then check with your camera that it works.
So that bar is just a fix point for the controller to focus on? The controller is what sends the signal back to the wii, not the controller to the bat then to the wii?.