VSS on 85 and 91 blazer

I am wiring a 91 4.3l to an 85 blazer chassis. I am using the wiring harness and ECM from the 91. The vss on the 85 is a light sensor in the Instrument cluster. I was told the VSS on the 91 is on the transmission. Where on the transmission is the VSS plug or outlet? Does anyone have a reference pic of what the connector should look like?