how do you hook up the factory console vacuum gauge? I wanna add one to my 70 Charger and the gauge seems to have 2 wires (orange and black) and a vacuum hose. I guess orange is light, black is ground? Where does the vacuum hose go? manifold? carb?

here's a pic of the type of gauge I'm talking about:



thanks

Orange is power/positive, black is ground...hook to manifold for best results

Awesome, thanks!