Could also be that several of the bulbs on the back of the dash cluster are dead.
The factory illumination does leave a lot to be desired. Many people have upgraded to higher amp bulbs or LED's. I installed a '68 Rally Gauge cluster on my '67 and when I was refurbishing it, I repainted the interior of the rear metal can white instead of the factory duck egg blue. That made a HUGE difference.
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI
