To fix f16.gau for FS2004:
1. Go
http://emarciano.flightsimmer.com/ and make sure you have the latest version of the gauge. You may need to download an entire panel just to get f16.gau. Install the gauge.
Important! This page also has an FSUIPC registration code on it. You will need it later.
2. Get the latest FS2004 version of FSUIPC if you don't already have it - 3.x or higher. Available here
http://www.schiratti.com/dowson.html 3. Fire up FS, hit alt and open up "Modules". Follow the instructions to register f16.gau.
These instructions are for FS2004 only. Do not try this in FS2002.