Vivaro Opel Tacho
repair manuals

This page contains manual on how to roll back or calibrate Opel tacho (tachograph). You will need our TachoSoft Mileage Calculator and some programmer (for example Willem Programmer). 

This picture show you how to locate Thomson M95020 memory chip on the Opel Vivaro odometer.

At this picture you can see that the Opel tacho (tachograph) power must be connected to Gray connector (PIN 16 is +12V and PIN 24 is ground).