speedometer issues

[xcspirit]

Speedometer keeps resetting due to current from engine. Anyone know how to prevent this? Bell f12. Stays on if I put it on other nonmotorized bike

 

[2door]

http://www.google.com/cse?cx=partne...270j13#gsc.tab=0&gsc.q=Speedometer&gsc.page=1

Much has been written about this problem. Here's some reading for you.

Tom