A yellow/ white stripe wire does run to the speedo in the dash harness. I am not perfectly sure if it is the only yellow and white stripe wire in the harness. But I hotwired my speed sensor to said wire to get my speedo to work when I converted to 5 speed. Ignore the pin # location in the Chiltons manual. I think nearly every model year the location of certian pin #'s for the ECU wires changed. But at least the Colors remained the same.