What was found
ANC/DLG - AFTER STARTING TAKEOFF ROLL-OUT, THE CARGO DOOR WARNING LIGHT CAME ON. THE TAKEOFF WAS ABORTED. THE LIGHT REMAINED ON UNTIL REACHING THE RAMP AREA. MAINTENANCE DEFERRED THE DOOR WARNING LIGHT SYSTEM IAW MEL 52-2. MAINTENANCE CLEARED THE DEFERRAL BY RE-RIGGING THE FORWARD UPPER WARNING SWITCH IAW FAI MM CHAP 52-20-00. INSPECTED THE WIRES ON THE REMAINING SWITCHES AND DOOR HANDLE SWITCH. THE SYSTEM CHECKED NORMAL.