Installing Air/Fuel Gauge

Hey, I am totally lost. I'm trying to install my Boost Gauge and my Air/Fuel Gauge and I'm going crazy. I can do the Boost Gauge w/ no problems. Just have to T some wiring w/ the Turbo Timer, but i'm racking my brain trying to figure out the Air/Fuel Gauge.

Any Help would be appreciated! Thanks!
Any web sites that you've seen could be great help too. (damn my visual learning skills! lol)

Thanks agian.

well crap i hope youve goten them in so by now... but just incase, here is the webpage i used to put mine in
http://jumptronix.com/2g_go_faster/