the problem started off slow. first the tempe guage would bounce. then my pyrometer would bounce to the turn signal being on. then the pyro would flicker with the AC being on. now the pyrometer wont ever work with the headlights are on and all the guages flicker at different times. any thoughts?

 

Check the body ground on the core support by the battery.

 

There is also a body ground behind #6 valve cover. The dash grounds are located behind the cargo light switch.

 

My pyro got real jumpy after i put an intercooler in. I had to mess around out by the core support and unknowingly broke off the terminal to the body ground in front of the battery. After I found the ground wire hanging free I reconnected it and all is good.