Re: gas gauge
I don't know if it's a wiring issue or what, but I believe the guage pods on the S197's are just crappy in general. I had to replace my guage pod earlier this year because it finally bit the dust. It had been going bad for about a year, with each guage going out one by one. It started with the speedo, followed by the oil guague, then the battery, then temp, & finally the gas guage. The only one that still worked was the tach, so I finally replaced the whole pod; Never did get a straight answer as to why it went bad. By the time I replaced it, the broken guages were all upside down as shown in soccerfreak's picture above.
'05 GT - Borla Catback, JLT Series 3 Intake & SCT SF3 Tuner, Koni Adjustable Shocks/Struts, H&R Race Springs, Roush Shifter, Hawk HP+ Brakes all around, Steeda Front Sway Bar & End-Links, Royal Purple Fluids
'2011 F-250 Super Duty Crew Cab - 6.7L PSD 4x4