Just wondering what this wire does. Its a tan wire in the center of the dashboard, normally behind where the radio would go. There are two plugs, one has a tag that says "auto" and the other says "manual". The car was an automatic, so its plugged into the "auto" wire. What exactly does this wire do? I swapped to a manual, just wondering if I should plug it in to the "manual" one or just leave it alone.