I'm running 3 greddy gauges , not fitted by me , does this mean behind the dash I have a data link unit somewhere ? Or can the gauges work without this unit ( I have no idea what it does )

Reason I ask I'm thinking of adding an additional greddy gauge and not sure if I need to buy the gauge or gauge with data link unit ?

Cheers

 

They each come with their own "controller" so a gaige should come complete with controller a d sensor

 

Ah rite ok bud , so I should have 3 data link units hidden somewhere behind the gauges then .im guessing the data units are allbthe same ? Or specific for each gauge i.e. Boost gauge uses different data link unit to say an EGT gauges?

Cheers