I had some trouble doing a search on this topic. I am wiring my VDO water temp gauge and I need to know where to tap into the main power and ground for the gauge. So far I have tapped into the switched circuit in the center console for the light in the gauge. So far, so good. Next, the directions recommend that the main power for the gauge be run from the battery. Wouldn't this mean it would be drawing power constantly even when the car is off? I would just like to know where I should run the power from. Sorry if this subject was posted before. The search function wasn't working for me.