I'm not trying to tap the fuel rail. My kit is the NOS 5116 Dry Kit, and it comes with a Fuel Pressure Safety Switch that installs in place of the schrader valve on the fuel rail. I have access to a mechanic at work and had him look for it today, he couldn't find a schrader valve and wound up printing a fuel rail assembly diagram from an '03 and sure enough there is a schrader valve, I'm assuming they changed it up for '04. My system won't work without this switch. I have no clue what to do. I've called NOS, and they are closed, the place I bought it said it would work on an '04 without a hitch. Any help would be much appreciated. Thanks