It may not matter. I'd test it with a drill motor and VOM. Just clip the wires together, spin the cable with the drill and see if you get anything. Not sure what scale you'll need to check for pulses...

Russ

 

I agree with your assumption.
Purple to purple/blk


Yellow to Green/blk seems correct.
I check a few wiring diagrams and that is what the show for the VSS.
I doubt it would hurt anything if it were hooked up backwards anyhow.

 

Thanks guys, I think youre probably right on all the above. I attached a pic of this VSS, just for the heck of it... its pretty rare im told, my local transmission place had never seen one before... There is a gear that goes on that stub on the end.... and a cable driven speedo cable screws onto the other end... and then of course it also has the connector at the top for the VSS output.... (4000 Pulse Per Mile, btw)

Edit - Added pic of the speedo gear too...

 

Ok. I have everything installed, and the computer is no longer throwing a code for the VSS, however I am not sure that its really working right. I have this cable that connects my laptop to the OBD2 diagnostic connector, and allows me to use software on the laptop to read/clear codes, as well as seeing live data from the ECM and a bunch of other stuff. However, the speedometer on the "dashboard" of the OBD2 software reports that I am going only 1 mph. And it doesn't even read that until you're going about 40mph... If it isnt reading the correct speed, then i might as well not even have the VSS....can anyone think of why this would only read 1mph at the most?? The same usb-to-obd2 adapter and same laptop reads the vehicle speed correctly on other vehicles I have used it on, so it has to be something to do with this vehicle... If the VSS can be wired backwards, is it possible that that could be the problem?