After experimenting with On-Off remote like in this post
http://www.wiimoteproject.com/general-hardware-talk/remote-control-for-on-off/
It turns out to be easy to change the jumper, as seen on the picture.

And I am planning to sell this for USD 50

The specification:
1. No rechargeable battery involved
2. Integrated remote control receiver and adaptor
3. 2.99 to 3.00 voltage output
4. Include Automatic Voltage Regulator
5. Customized cable length for DC cable or AC cable
6. LED indicator for channel A or channel B
7. No soldering required in the wiimote
8. Using standard adaptor connector, not audio connector
9. 256 different frequency combinations (2^8)
10. 2A transformer for durable continuous usage

<a href="http://www.youtube.com/watch?v=H4RBh8NLH2g" target="_blank">http://www.youtube.com/watch?v=H4RBh8NLH2g</a>

<a href="http://www.youtube.com/watch?v=oMVSdWrH8P8" target="_blank">http://www.youtube.com/watch?v=oMVSdWrH8P8</a>

<a href="http://www.youtube.com/watch?v=ZZpjr0Cq3Ec" target="_blank">http://www.youtube.com/watch?v=ZZpjr0Cq3Ec</a>

If you are interested, send email to iwi.international at gmail.com