As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH OVERWING EXTERNAL EMER LIGHTS FAIL TO ILLUMINATE. FUSE ON CHARGER ASSEMBLY WHICH IS CONNECTED TO BOTH AFOREMENTIONED LIGHTS HAS A RESISTANCE OF 9.7 OHMS. ONCE FUSE WAS REPLACED DISCREPANCY WAS CORRECTED. WORK PERFORMED IAW AMM 33-50-04 FOR ACCESS TO BATTERY NR 4 & SMP FOR REMOVAL & REPLACEMENT OF FUSE.