im installing my volt and air fuel gauge today i need to know where i can get the 12v from.... is there a wire i can just tap into

 

If you're doing pillar mount gauges, I'd wire it to the fuse box. There are some free spots on the fuse box below the dash. If you're wiring the gauges somewhere in the center console, you can also route to the fuse box or if you're lazy, just tap the power from the cigarette lighter.