Do i have a 98 mustang gt close to stock with a couple bolt ons and i ran into this issue where my speedo and odom isnt working anymore ive tried changing the vss and its got the gear so i made sure the old one was good, i even sprayed out the connection with air and it was fine, No luck so i toon apart my cluster and replaced the gears, stil no luck and checked the fuses on the panel inside the car and they were fine somebody plz help its drivin me crazy

 

Also after changing the sensor it was still throwing a code for p0500

 

www.obd-codes.com/p0500

Here's some additional info on that dtc. Starting point for me would be to inspect wiring, especially since you've already gone to the trouble of replacing the sensor, speedo and cluster gears.