What was found
DURING B-INSPECTION FOUND THE SECOND AISLE AND RIGHT FORWARD FAIRING EXTERNAL EMERGENCY LIGHTS ARE INOPERATIVE. THE AIRCRAFT WAS REMOVED FROM SERVICE. FOUND DEDICATED FUSE IN CIRCUIT POWERING BOTH LIGHTS TO HAVE A RESISTANCE OF 21 OHMS. GAINED ACCESS TO FUSE IN NR 2 EMERGENCY BATTERY CHARGING ASSEMBLY AND RE-INSTALLED HEADLINER IAW STEP 2 OF EMB145 AMM 33-50-04. REMOVED AND REPLACED FUSE IAW EMB145 STANDARD MAINTENANCE PRACTICES. THE OPERATIONAL CHECK OF LIGHTS WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.