I have a CDI ignition from FTL which came with no instructions on how to connect everything up. Along with the plug wire there are 3 wires that come out. I know that the one goes to the battery and the other to the hall sensor, but the third I don't know where that goes. It has a tag on it that says Tachometer. I also have a engine kill switch that needs to be connected to the ignition to kill the engine when I need to, and it says to connect it to the ignition, but where? Does anyone have instructions? Thanks, Rick