1990 240 sr20 tach problem?

[sr20buds]

i have a 1990 240sx... i just recently bought the car... it has the sr20 swap done... but the only that was wrong was the instrament cluster didnt work... so i did some research and i bought a used 1 from ebay that was said to work with the sr20... i got the cluster all hooked up and now everythin works cept the tach... wat do i do... is there a wire thats just chillin in the harness and not hooked up to anything.. i dont really care if the tach in the cluster works ... but if i want to put 1 in outside the cluster... what steps should i take or wat should i be looking for?

[ZL-Auto]

Was your car originally a Single cam engine ? If you have a JDM SR cluster, the tach / speedo signals should be there considering it is a twin cam engine, maybe some of the sensors are not getting the correctsignal references back to the cluster ?

[sr20buds]

i got a double overhead tach... from a Ka-t engine... and everything in the cluster works cept the tach

[SpeedRacer1]

Check the yellow wire with red stripe in the ECU to dash wiring. Ensure it is hooked up there and behind the cluster.

[sr20buds]

thanks thats really wat i was looking for...