Re: Where to Ground The Instrument cluster??
Did you repaint the back side of your dash also? If so you probably don't have good contact between the gauge cluster and the metal of the dash. If that's the case, running a ground wire from the dash to battery ground won't help. Run a grounding wire from the gauge cluster itself.
'75 CJ5,258,T18a,4.27's,33's,On-board air,Warn 8274