How important is the VSS wire?
 

How important is the VSS wire? If I don't hook this up on my in-dash gps will it be off by a few feet only?

RE: How important is the VSS wire?
 

I would guess its not that important, although I do not have a indash gps, nor have I installed one, but I have gps system and it is pretty accurate and can guess the speed accurately and isnt hooked up to the vss.

RE: How important is the VSS wire?
 

I'm pretty sure the GPS uses your coordinates to determine your speed.

RE: How important is the VSS wire?
 

I'm pretty sure that is just for the unit to know if your moving or not to lock out certain features. So instead of a parking brake, it makes sure your not moving. GPS speeds are accurate to 0.1mph if I remember correctly.

EDIT: I'd like to emphasize that once your going over say 5mph or so GPS speeds are very accurate, only at very slow speeds does the accuracy diminish.

RE: How important is the VSS wire?
 

OK thanks guys. :)