Go to the left side and find the coil, I believe it is the front cylinder coil but not sure. Anyways trim back the wire loom around the coil connector so you can see the wires there. There should only be two wires. Clip around one of them and make sure the tach on the dyno screen is working. If the tach is erratic at high RPM then clip around the other wire. One wire works better then the other.