My suspicions are a bad ground. I've already cleaned the ground back at the tank to the sender.I ran a redundant ground to the cluster, no change. According to the schematic, the gauge & lights don't share any common grounds/ciruits.
Unless, the gauge is grounded to the cluster interally where it mounts?? I think I'll pull the cluster & check/clean the mounting points.
Thanks for the input guys.
JS
