I also downloaded the F14B Tomcat the other day and I think this is what I did and got it working fine. Sorry I'm not a computer expert so just bear with me!
. Unzip files to a temporary folder.
. Open f14bfs9a folder.
. Open gauges folder. There are 3 folders inside it called 'rcb-gauges', 'Tomcat', and 'TomcatVC'.
. Open each of these folders individually and copy-paste all the content gauge files to your fs9 gauges.
I did find that I have to click my mouse anywhere on the cockpit dash and the VC cockpit dash before the I could see the heat waves, smoke and afterburner effects which are pretty darn good to say the least!
I have had hours of fun already and will definitely keep this awsome aircraft in my hangar.
Good luck and keep persevering, its well worth the effort!