I think it gets converted to an electrical signal at the back of the speedometer, but I have never found exactly where this is. I have taken apart many gauge clusters and I do know that cable VSS's clusters have electronic connections at the back of the gauge, but I don't know which wire to tell you to use.
This is something I need to think about before I do an OBD-1 conversion, because the OBD-1 ECU's need a VSS signal.
wish I knew more to help, I just always thought they were same...I didn't think the conversion whether made in the tranny or behind the speedo would give any different a signal. On my 89 Chevy, the vss signal goes right into the ECU. And it gets converted where the maechanical line ends behind the Speedo...
I just figure if your car has a speedo that works, then you have a signal you can splice into and use. :?
"You have to know the truth, and seek the truth, and the truth will set you free."
I'm just a little clueless why it wouldn't work on the wire going to the ecu, and it doesn't look like I can shove this electronic vss in my auto tranny, I guess I just need to get the swap over with, though that's very scary.