PurposeALONG WITH THE 132074 BREAKOUT BOX - RELAY SYSTEM, AIR AND GROUND USED FOR SPECIFIC AMM PROCEDURES TO CHECK THE ELECTRICAL EQUIPMENT OF THE THRUST REVERSER SYSTEMAirplane737, 747, 757, 767, 777-200, 777-200ER, 777-200LR, 777-300, 777-300ER, 777-8, 777-9, 777FUsage CodeMAINTENANCE 