You can take that little cubbie out (where I have mine installed) and basically put a screw into the top of the boost gauge (small of course) to hold it in. My local shop gave me a plastic surround for the boost gauge so it will fit right in and not shake back and forth. Tap into the vacume line that connects to the intake manifold to read your boost (see my pictures). If you're getting one with a backlight, you can then tap into Fuse #11. The light will be on all the time while driving.. but when the car shuts off (and you hear that relay "click") the light will shut off too.