Hi I want to install a tach on this motor. The teleflex instruction say to hook the sender portion to the yellow/gray wire. Is this wire in the harness that goes to the key switch? I don't see any extra wires at the throttle! It also says to look at the terminal strip on the engine for the same yellow/gray wire, says I could run a seperate wire to this location. I can't find any yellow/graywires. I have 3 or 4 yellow wires on that terminal strip. Does anyone have this same motor to look for me.<br />steve