you need to buy a CANBUS INTERFACE
on the back of the stereo . middle plug green wire with white trace
the middle wire on the speedo block on the engine by the gear lever in the engine
It depends on what type of signal the meter needs/ voltage range. The signal would have to intercepted form the transmission sensor, wheel speed sensor or the signal going to the instrument cluster. An alternative is to get a separate GPS based/speed sensor, auto-meter sells one to use for their electronic speedometers due to different transmission, wheel sizes combos available when a car is customized. It might be better/cheaper to due it that way.
behind glovebox on ecu 2nd plug down top wire light purple/white
Trouble code P0722 means: Transmission Speed Signal Missing
Code 55= "No input signal from vehicle speed pulse generator"
Trouble code P0722 means:Output speed sensor circuit no signal
Trouble code p1633 means: Vehicle Speed Signal
is it for a taxi meter if so you are ok do not need a unit for it as i have on as a taxi
The answer is 72Km/hr
Trouble code p1633 means: Vehicle Speed Signal