As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 2978 RT PROP ANN ON OVERHEAD PANEL ILLUMINATED. RESET TWICE ON THIRD ATTEMPT THE LIGHT NO LONGER ILLUMINATED. LIGHT CAME ON AFTER 2 MINUTES IN FIRST TWO ATTEMPTS. AIR RETURN TO MSP. MAINTENANCE REPLACED TERMINAL END ON BRUSH BLOCK. OPS CHECK GOOD.