It sounds like a wiring issue to me. More than likely in the fairing. There is a harness that feeds your 4 small gauges. Depending on how the harness it routed around the fairing support brackets, a wire could be rubbed through by the metal. If you know you have oil and there are no odd sounds, and you have checked your battery, at the terminals, with a multimeter and your bike is charging, I would then check the wires in the fairing.
2018 FLTRXS Wicked Red
Harley Master Tech
Disabled Combat Vet - JTAC 96-06