1970 Dart Cluster Removal

Three last things... you did try replacing the temp sending unit first right? Taking this unit out is a ***** and you should really have tried everything else first. On the fuel gauge side an easily missed piece is that the sending unit in the tank is grounded to the metal fuel line, but they are separated by a little piece of rubber fuel hose so there is a flat metal strip that clips to the metal line out of the sending unit, bridges over the rubber hose and clips to the metal fuel line. Also after reading your post again, if that voltage limiter is trash, it would effect both the fuel and temp gauges.