Quote:
Originally posted by gblaue:
Quote:
Originally posted by bpdA:
[b]I suppose my only question is wether there are different types of speed signals? Or is it the same thing throughout cars (i.e., is a conventional speed pulse signal [pre-05 X] the same thing as a speed signal being sent from the instrument cluster to the radio as discussed here)? My VSS wire for my nav is not attached to anything currently but if there is VSS input that works then I'm all over it!
No, the VSS pulse is not the same in all cars. My suspicion is that the Navi unit will learn/calibrate by comparing it's calculated speed by GPS to the VSS pulse. The reason for this is that if you were in, let's just say a 5 mile tunnel, the Navi will need to have some means of distance measurement.[/b]
Good point. If the Navi system can indeed learn/calibrate that would be sweet!