The 250-4160 is a speed signal generator that goes in-line with a GM style speedometer cable, at the transmission. Simply unscrew the OEM cable from the transmission, thread the 250-4160 into the transmission, then thread the OEM cable on to the 250-4160. Produces an 8000ppm sine wave signal. The 4160 kit connects directly to your transmission. If you do not have clearance, you may need the 250-4153 kit that includes a 7" speedo cable extension. Please call with any application or installation questions.
