I bought a tach of ebay that is supposed to work for all 2 strokes . When I open the box it shows how to wire it for points ignition or a magneto system.My engine is a Icc Kart engine . The ignition closly resembles a lawn mower there is a stator and a coil ....No cdi like a motorcyle . I assume every time it passes a stator mark it fires the coil .The coil has three wire one for a kill switch and two go to the stator . Do you think a analog three wire Tach will work with this . Thanks