Speedo Sensor Wiring

[msports180]

Ages ago i did the manual conversion on my R34 using R33 parts.

The speedo sensor plug was different, i purchased a R34 Speedo Sensor recently to replace this but it appears the plugs been damaged so i dont know which way it goes, if i put the two wires the wrong way around is the signal going to damage anything?

Goes in for a tune soon and needs the speed signal, if i cant get it working prior i'll just get the workshop to do it, but would rather do it myself instead of paying them.

Cheer's!

[The Dan]

Ages ago i did the manual conversion on my R34 using R33 parts.

The speedo sensor plug was different, i purchased a R34 Speedo Sensor recently to replace this but it appears the plugs been damaged so i dont know which way it goes, if i put the two wires the wrong way around is the signal going to damage anything?

Goes in for a tune soon and needs the speed signal, if i cant get it working prior i'll just get the workshop to do it, but would rather do it myself instead of paying them.

Cheer's!

No the signal will not damage anything. Both wires should output a pulse from the sender but one goes to ground on the loom end.

I'm fairly sure you can put the wires either way around and it will work but if you put a deutch plug there you can just swap them if it doesn't.

[msports180]

Sweet thanks mate! I was thinking a long the lines of the duetch plug as it needs to be water tight under there, NFI how the old one got smashed

[GTSBoy]

The signal from the sensor is AC anyway. Effectively non polarised.

[wolverine]

Thread bump.

Where is the speedo sender on a S2 R33 GTS-t?

I am having issues with an intermittent speedo that wasn't fixed with a cluster change so I am guessing there might be an issue with the sender or plug.

[The Dan]

Thread bump.

Where is the speedo sender on a S2 R33 GTS-t?

I am having issues with an intermittent speedo that wasn't fixed with a cluster change so I am guessing there might be an issue with the sender or plug.

Drivers side of the gearbox right near the crossmember

[wolverine]

Cheers Dan, I will have to go and give some wires a wiggle.

[wolverine]

Has anyone had a faulty sender causing intermittent speedo issues?

I cleaned the plug with contact cleaner and had a quick look and couldn't see anything obvious. I don't think it is likely that both speedos are faulty so it seems the issue is between the sender and the dash or the sender itself.

[The Dan]

The sender produces its own signal so you can test it at every point in the loom. We usually trace it back to the section of the harness just beneath the fuse box and break it open there. Splice in with our scope and test the signal. If the signal is good, the dash is going to be the problem or the wire under the dash behind the cluster.

9/10 times it's the cluster though. The heat f**ks them up. Borrow a mates, swap it out and see if it fixes your problem

[wolverine]

I bought another cluster from another SAU member and the speedo has the same issue.

The advice from Andy at ASR is that he has only ever seen cluster issues, never a sender. When the car gets run for >30 mins usually it comes good so it is temperature dependent.

I guess I will have to get someone to trace the wiring to where the fault is.

[wolverine]

Sender was faulty, replaced with a new one. Speedo works fine now.