Originally Posted by cheesehazard
Ok I have it set to the right zone and it is also calibrated. I think I have found the vss wire. Its the grey with black i found it on the passanger side fuse area. What will this do if I tap into it? Does it just give you your mph on the overhead console?
It tells the console whether you are moving or stopped. When moving through the air, it is OK to update the temperature display. When stopped, the engine and radiator heat can cause the sensor to read artificially high. So, to prevent the erroneous temp readouts, the temperature updates are suspended when the VSS indicates that the truck is stopped.