What was found
WITH EMER LIGHTS IN THE ARM POSITION-NO LIGHTS ILLUMINATE. HOWEVER, EVERY 30 SECONDS OR SO, ALL OF THE EMERGENCY LIGHTS FLASH TEMPORARILY (SEE ATTACHED VIDEO). GAINED ACCESS TO PILOT CONTROL EMERGENCY LIGHTS RELAY (KC005) PN: M83536/15-022L NSN THEN INSTALLED CUSTOMER SUPPLIED NEW RELAY PN: M83536/15-022 IAW CE680 AMM 24-60-20. OPERATIONAL CHECKS ARE SATISFACTORY AT THIS TIME. NO DEFECTS NOTED. RETURNED THE AIRCRAFT BACK TO NORMAL CONFIGURATION.