From the 93 EVTM:
"Vehicle speed information is provided by the Pulse Generator located on the transaxle housing. This component is a magnetic pickup that detects the passing of projections on the transaxle's reverse forward drum. This drum has 12 projections that are evenly spaced 30 degrees apart. As the drum rotates, a voltage pulse is generated in the magnetic pickup each time a projection passes the sensor. The Transmission Control Module determines vehicle speed by counting the times per second that a pulse is generated."
The wiring diagram shows a Turbine Sensor (pulse Generator) with 4 wires- ground,tran fluid temp switch and 2 wires from pickup, the pickup wires go to terminals 2J & 2L of the trans control
module. I'd look for a 4 wire connector coming off the transmission.
George