As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON GROUND, WHILE PERFORMING THE CLEANING OF THE ACFT. IT WAS DISCOVERED THAT THE EMERGENCY SIDEWALL LIGHT ASSY AT 10A WAS MISSING AND THE WIRES HANGING DOWN. INSTALLED MISSING LT ROW NR 10 EMERGENCY EXIT LIGHT ASSY IAW MM 33-57-13. OPS CKS OK.