Right now, I have my wideband, fuel pressure/boost gauges, radar detector, white face guages and probably more all wired to a fuse in my fusebox. Its pretty ghetto, the power wire is jammed up in there but it works. I bought a fuse block from Advance, and now I want to do it right. Where should I get the power from under there? It needs to be an source thats turns on when ignition is on.