How do you get xbox 360 to recognize Wii sensor bar?

How to fix a wii sensor bar is quite a vague question...the answer depends on what its wrong with the bar...is it the wires? is it the plug? is it the bar itself? please be more precise so i can help u with this...

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The Wii Sensor Bar's wire is near impossible to repair. Even attempts to splice and reattach the wire has failed. The easiest thing to do would be to purchase a new sensor bar. They cost only $6.95 at the following website which is in the USA:

http://store.richspsxparts.com/wiisebarwiwi.html