removed lid (not sure what to call it) over headlight to gain access to plug in harness with tach wires in it. unplugged connector and removed other end of pink wire from coil. checked continuity from pink wire pin in harness to eyelet for coil, had none. cut wire at plug by headlight , solder and shrink tube new wire and run to coil. connect battery back up and start bike,it runs and the tach works. ok, this is where I'm at in my head.,hard for me to accept that wire went bad from tach to cdi box . they run opposite directions in factory harness , one to tach and the other to cdi , the only thing i see in common is where they hook up to coil. I spent hours yesterday looking at wire diagrams online, I didn't see anything else in the circuit (pink wire) . goes from cdi to coil and another from coil to tach. I'm not willing to cut the factory wire loom to see for sure. bike stopped running for P.O. he changed coil and thats where I came in 2 yrs later . I'm hoping someone smarter than me can tell me if I eliminated something and if so what it is/does .