Speedo Corrector Module. This module allows you to correct your speedo after changing the diff ratio or rolling diameter of your tyres.
Designed work with XD through AU Falcon electronic speedo drives, this module will also work on other vehicles with a similar speedo signal. The module has the ability to adjust from +1 to +100% and -1 to -50%, both in 100 steps for high accuracy.
Now you can change your final drive without getting an incorrect speedo reading or effecting your auto transmission shift speeds!
Simple connection with just 4 wires to hook up (power, ground, speed signal in, speed signal out).
Comes with instructions and steps for testing.