Quote:
Originally Posted by oab_au
|
It does not appear that the transmission or its connections are involved with the tacho.
The taco utilises a signal from the ECU, which apparently uses the crank position sensor or the engine timing circuitry in order to detect engine speed.
The tacho derives its ground and battery voltage supply via a two pin plug-socket connected by a black ground wire and a green yellow positive supply wire, supplied via fuse 15. From the available diagrams it appears to exit the instrument loom and is under the dash.
Worth a check for voltage and ground.