I eventually listened to all on the forum re: VSS wires and 2007 Chrysler products - esp Dodge Ram. FYI - I can say for certain it is not the brown/white, green/brown or green/white wires as many have suggested - there is no VSS wire and the only thing that made the GPS work was the CAN-BUS interface. (CHYA05 for this vehicle)

After installation the GPS finally started behaving. So - save yourself the trouble and get this piece of electronics vs trying anything else. Lesson learned.

You need that anyways to install it. Did you not trust it or what?

Point was several folks were telling me the part was not needed.

Point was several folks were telling me the part was not needed.

Point was several folks were telling me the part was not needed.

See attached pics for location of Speed Sense Wire...

HTH

Oh I see. I always opt for the easy way out! Especially when its all right there