Bit of a strange question but here goes and hopefully someone will know.
Does the Clio 2 172/Megane Speed Sensor that plugs into the gearbox give the same frequency and pattern as the Williams sensor on the end of the Cable?

I don't require a speedo in my car and would like to save having to have the cable just laying about behind the dash just so the ECU has the sensor output. If the 172/Megane sensor readings match the original, I can wire that up to the ECU.