| If the bike is using 12v as the power supply (battery) why not add a power resistor to drop the power to the tach? (will have to work out the correct ohm rating for 9.6v though)
__________________
Bikes:
2005 bravo X9 50cc
2006 bravo X9 110cc
http://www.gabgrafix.com - Custom Paint & Airbrushing | 
