Used for fitting tachographs to such vehicles as Landrover, Transit, etc, with electronic speedo's
Colour Code - 3 Core
Yellow Tacho Plug
Brown
Transducer pos.
Black
Supply
Blue
Transducer neg.
Brown
Ground
Green/Yellow
signal
Blue
Signal 1
White
Signal 2 (inverted)
The option of how to connect to the existing electronic transducer is left to the particular fitting application. In most cases all that is required is to connect the Green/Yellow wire to the signal wire of the transducer. The other two wires may be shortened, bent back and then heatshrink applied to secure the armoured cable and insulate the cut off wire.
NOTE: a signal must return to its source, i.e. earth return. On some vehicles, rust or bad connection might make this a difficult path. It is possible to overcome this by using the Blue wire and connecting it to the earth of the transducer.
