Signal Wire...

[nissan200sx.dk]

Hi all.

On a R33 GTS, RB25DET series 1, i need to find the the wire on the instrument cluster were the speed signal is in.

If i understand this correct, from the sensor it goes to the ECU and to the cluster.

My new vipec ECU can control the speedo, and I am trying to getting this to work but cant seem to locate the signal wire at the cluster.

[JonnoHR31]

33s run an electronic speedo and the signal goes straight to the cluster afaik, then a wire runs from there to the ecu to tell it when the cars moving. to adjust the speedo with the vipec it'd need to be wired in between the gbox and the cluster

[nissan200sx.dk]

Thank you for the reply.

you dont happen to know which wire at the cluster that is the signal wire? Were it comes in, and goes out again.

There is 4 wires total for the speedo, i can find + and -. So the last two is signal in and out?

thanks

[BoostedBarge]

You might want to look into the circuitry a bit further. I'm fairly certain that on my old GTI-R, the electronics in the dash altered the speed signal from the speed sensor before it is sent on to the ECU. I'm guessing here, but maybe the speed sensor gives out a sine wave and the electronics in the dash convert it to a 0-5V square wave for the ECU. Maybe you could modify the circuit to patch the Vipec in there somewhere.