Nissan 240sx my speedometer was going crazy so got a new speed sensor do you know where to install it at cant find it anywhere?

its on the transmission man....I got a 89 240sx twin turbo and its under the passenger floor board hook on the transmission.....if u bought one then u no what it looks like so u cant miss it...just jack it up real good and look on the tranny and u will see it......u will need a Phillips screw driver and that's it....just one screw holding it in..

Brandon_Thomas_M@Yahoo.com