Speedometer failure after SR/MT swap into AT convertible

[MeltedMonitor]

Whew, I did some searching and didn't come up with anything, so let's see if you guys can help.

I have a 92 convertible that I just swapped in an S13 blacktop and 5-speed. Everything works great except the speedometer, which worked fine before the swap.

I checked the plugs, then swapped the speed sensor out, with no change.

I am wondering anyone else that did an auto->manual swap experienced a similar problem. I assume the that AT monitored speed somehow, so when the control boxes were removed it might have broken the circuit?

Solutions?

Darren

[projectRDM]

No. VSS goes to the cluster first, then to the ECU and auto ECU. Might check to see if the wiring is correct from the swap.

[MeltedMonitor]

Well, I located the wires for the speedometer in the kick panel (ylw/blk, ylw/blu) and jumped them directly from the sensor plug near the tranny... nada. I guess I don't know 100% that the kick panel wires were the correct ones, but they were in the right location/right color as per the FSM.

I guess the next step is to pull out the gauge cluster and run it direct... that way I know I have the right wires.

A friend rewired my MT SR20DET harness to work in the car and I don't know exactly what changes he made... so I am working in the dark.

Any suggestions are appreciated. Anyone know how to test the signal from the sensor? (voltage? resistance?)

Also, I happened across an article about the SR swap that mentioned using a KA sensor. No one else I knew had to do this, but I am the only one that had a car that started life as an AT so I am not going to assume anything.

Darren

[MeltedMonitor]

Well, jumped the speed sensor wiring from the sender directly to the cluster and it worked. VERY strange, must have been something to do with the fact that I used the MT S13 engine harness in the AT 240SX.

Darren