Speed signal wire

[aucorium]

ahhh. i thought maybe where i got the Tach wire signal from , there might be a wire i can piggback off. then how does the Scangauge get speed data from the OBD2 port ? must be one of those wires sending speed info ?

[Kiz]

Originally Posted by aucorium

then how does the Scangauge get speed data from the OBD2 port ? must be one of those wires sending speed info ?

Originally Posted by Kiz

The OBD interface sends serial data, there aren't individual wires for different sensors. You'll need to get the speed signal from the cluster loom or ECU loom.

As mentioned in lunjiaow's post, he got the speed signal from the pink wire going to the gauge cluster. You'll need to find the wire going to the gauge cluster with the tach signal for your application.

For reference, the common wires in the OBDII connector are simply 2xData, 1xground and 1xpower. The scanguage reads the serial data and processes it for it to display to you.