I want to tap into the VSS wire in my car, and display in MPH on a simple LCD, i guess it could be segmented, i would only need 2 digits, i never go over 99mph, and i dont need deicmal points. My question is: is the vss wire analog or digital? what would i use to translate whatever signal this is? thanks for all your help. I know this feature exists on the Pioneer AVIC-N1 car stereo. -Ryan