What was found
SEA FLIGHT NR 2160, DURING CLIMB-OUT ENGINE INTAKE BYPASS DOORS, AUX PUMP NR 1 AND NR 2 LIGHTS, AND AUTOFEATHER ARM/SELECT SWITCHES WENT DARK AND THEN BACK ON INTERMITTENTLY. THE SYSTEMS WERE NOT AFFECTED, INDICATIONS ONLY. MAINTENANCE PERFORMED THE OPS TEST OF THE ADVISORY LIGHTS SYSTEM IAW AMM 33-13-00-710-801. OPS TEST GOOD. REPLACED THE ADVISOR LIGHTS CONTROL BOX PER MAINTENANCE CONTROL. ALL OPERATIONAL TESTS GOOD. AIRCRAFT RETURNED TO SERVICE.