Modify an m104 tachometer to work with an om603?
Modify an m104 tachometer to work with an om603?
There is an easy way for the speedometer, too. I am working on it right now at another project car. The w124/126 speedometer uses an inductive sensor in the gearbox (4 signals per propshaft revolution). U can connect awheel speed sensor to it and mount it i.e. at the propshaft flange. The speedometer can be easily adjusted by replacing a resistor on its board with a variable resistor.