Which is the wire for speed sensor

[BlockHead]

Which wire going to the ECU is for the speed sensor? I was trying to get it hooked up so my Revspeed meter but I am having problems finding the right wire to give me a signal.

[xjon]

which engine do you have?

[PROJECTRB240SX]

PIN 53, IIRC..... ON RB20 AND RB25.

[xjon]

For a r33 rb25det pin# 53 y/g wire. For illustration see megala.com

[xjon]

what's IIRC?

[Joe]

if i recall correctly

[BlockHead]

alright sweet I will try it

[spec-u-later]

Yellow with green stripe. The upper left wire. Follow the yellow wires It can only bee one of them. Need to pull the 5th gear rev sensor from teh trani as well.

[BlockHead]

i tried the yellow green but it doesnt do anything on the rev speed meter, btw I got a rb25det sorry I forgot to mention it. I will try it again though

[PROJECTRB240SX]

pin 53.

[Imissmyturbo]

The wire that goes to the ECU comes from the insturment cluster. I didn't hook mine up. I guess that wouldn't cause any boost/running isssues would it? Not sure of the wire color off the top of my head.

[xjon]

pin#53 on the ecu which leads to the instrument cluster. It is yellow with green stripe. See megala.com if you need info on where pin # 53 is. splice somewhere in between the ecu and the instrument cluster.

[BlockHead]

Well I have tried and tried and tried, could it be that I dont have the speed sensors hooked up or some wire is missing because I tap it into the yellow green and nothing happens, nada, zero, you get the point.

[BlockHead]

come on guys, anyone

ok does anyone else have a RSM hooked up???

[PROJECTRB240SX]

ARE YOU USING THE KA SPEED SENSOR AND KA LOWER HARNESS?

[BlockHead]

from what I have read the KA speed sensor wont work on the RB25 transmission.

[PROJECTRB240SX]

AHH, I THOUGHT YOU HAD A 20..... WELL IN THAT CASE YOU NEED TO GET A ELECTRIC SENSOR FOR THE RSM TO WORK. THE ECU ONE ISN'T GOING TO BE HOOKED UP BECAUSE ITS FEED COMES FROM THE GAUGE.

[NISMO_RB25]

I have an APEXI RSM hooked up in my car (S13 with RB25DET). I still had to calibrate it. I did find something interesting. If you look at the kph on your stock 240 gauge, it pretty much matches the actual mph speed you are going. Mckinney motorsports sells a device that will make your speedo work correctly.

[PROJECTRB240SX]

NISMO WHAT SPEED SENSOR ARE YOU USING? DO YOU STILL HAVE THE CABLE HOOKED UP?

[IvoryJ30t]

I have an APEXI RSM hooked up in my car (S13 with RB25DET). I still had to calibrate it. I did find something interesting. If you look at the kph on your stock 240 gauge, it pretty much matches the actual mph speed you are going. Mckinney motorsports sells a device that will make your speedo work correctly.

must have a convertor chip in the cluster.

[BlockHead]

so the yellow green comes from the cluster, so what wire goes TO the cluster?