Originally Posted by sc3757

Just an FYI your odo won't increase because your car isn't "moving". I have the same problem in mine but I just use my aem gauge . You figure it out let me know man. Best of luck to you.

Originally Posted by fried_rice

I used the transmission speed sensor(right rear of the transmission) to get the speed signal to the gauge cluster. That is how the wiring diagrams show it, the three wires on the NO.1 speed sensor are Yellow( pin 1), Red(pin 2) and Blue/Red(pin 3) of the speed sensor connector. The speedometer signal goes from plug 90980-10921 to the large middle plug (C14) on the cluster with 23 pins.

I spliced the orange plug under the passenger carpet and ran it to the speedometer. I don't know why the signal wasn't getting from there to the cluster, but I just hard wired to be through with it.

Speed sensor diagram for 1JZ, probably roughly the same for sc3,sc4, supra etc.


Pic of the orange body harness plug. Pin 7 is to the speedometer, once again it's blue/red.


Pic of the gauge cluster plug (c14), pin 13 is the speedometer signal once again it's blue/red. This is the big middle plug on the cluster.


*Cliff notes* splice the blue/red wire off the speed sensor to the back of the cluster.

Originally Posted by Bdub215

toyodi y.com! Sent from my iPhone using Tapatalk