RB20 Speedometer issue

[240SETulsa]

Ok so I recently swapped my RB20 into my S13. I used the sensor from my KA for the Speedo. However it isnt working, yet it worked in my old car. I got another one from a friend but im afraid that I am going to swap this one in and it still not be the issue since the old one worked before in the KA. Could a sensor really go bad from one transmission to another?

What else could it be?

[Yellow4g63]

could be the wiring.

[240SETulsa]

I trusted wiring to a friend of mine who has done several RB swaps so I dont have any first hand knowledge on the subject.

[Yellow4g63]

Take the signal from the ecu and wire it right to the cluster and see if that works. Could be wiring in the car that is what I ment.

[RustspecS13]

Trace the wires for it, they go directly into the fuse box area. I did my own rb20 wiring, and the speedo is completely separate from the ecu/engine harness.

~Alex

[Seanzyyy]

use a speed sensor from a z32.

[RustspecS13]

use a speed sensor from a z32.

No. Z32 works in rb25 trans, Ka works in RB20 trans.

~Alex