What was found
AIRCRAFT WAS NOT GROUNDED: LEFT AFT FUEL PUMP LOW PRESSURE LIGHT DOES NOT ILLUMINATE WHEN THE SWITCH IS IN THE OFF POSITION. WHILE TROUBLESHOOTING, FOUND D868 CONNECTOR ON NUMBER 1 AFT LOW PRESSURE SWITCH CORRODED. REMOVE AND REPLACED CONNECTOR D868 (AALA202503181840), PER WDM 28-43-11 AND SWPM 20-61-11. OPERTIONAL CHECK GOOD. AS PRECAUTIONARY. ALSO REMOVE AND REPLACED R18 RELAY (AALA202503189710), PER WDM 28-23-11. OPERTIONAL CHECK GOOD. NO FURTHER DEFECTS NOTED AT THIS TIME.