The new stereo shop I'm going to is saying that I need a piece for my unit to work accordingly with the VSS. He said something that's made by SoundGate Audio (or something like that).
He said that he "discovered the 2007 Mustang GT Coupe's speed sense function is done digitally through a can bus system which requires a rather pricy interface." Is this true????
If it is...is the speed sensor that important to hook up? Please help.