TM 1-1520-238-T-10 WIRING DIAGRAM DIRECTORY (cont) REFDES COMPONENT CABLE PARAGRAPH WIRING DIAGRAM K3 (Al A131) ENGINE 2 FUEL VALVE W61213-2 FUEL CROSSFEED/BOOST CLOSE/ENG START RELAY K3 (A128) RELAY 20-3A DOPPLER NAVIGATION AN/ASN-137 (ADD) K3 (A128) RELAY 20-7 DATA TRANSFER UNIT (ADD) K3 (A128) RELAY 20-8 EGI (ADD) K3 (A138) START RELAY W616 5-1 AUXILIARY POWER UNIT (APU) K3 (A402) BLADE DE-ICE W668 9-1 AC ELECTRICAL POWER CONTACTOR GENERATION K3 (A402) BLADE DE-ICE W668 25-3 ROTOR BLADES DE-ICE CONTACTOR K3-1/2 REMOTE SAFE DRIVE S1 W668 14-1 HELLFIRE MISSILE (A402) AND S2 RELAY K3-3 (A402) RADAR JAM. RELAY W668 21-2 RADAR JAMMER AN/ALQ- 136 K3-4 (A402) REFUEL VALVE CAUTION W668 13-4 PRESSURE RELAY REFUELING/DEFUELING K3-5/6 LAUNCHERP WRW668 14-1 HELLFIRE MISSILE (A402) ENABLE RELAY K3-7 (A402) FLAG RELAY W668 20-4 HARS K3-9/10 REMOTE SAFE DRIVE S3 W668 14-1 HELLFIRE MISSILE (A402) AND S4 RELAY K320 SEARCHLIGHT RELAY W118 9-24 LANDING/SEARCH LIGHT K34 TAIL WHEEL LOCK W170 15-1 HYDRAULIC RELAY K4 (Al A131) ENGINE 2 FUEL VALVNE W612 13-2 FUEL CROSSFEED/BOOST CLOSE/ENG START RELAY K4 (A128) RELAY 20-3A DOPPLER NAVIGATION AN/ASN-137 (ADD) K4 (A128) RELAY 20-7 DATA TRANSFER UNIT (ADD) K4 (A128) RELAY 20-8 EGI (ADD) K4-1/2 SQUAT RELAY W668 3-1 AERIAL ROCKET CONTROL (A402) SYSTEM (ARCS) K4-1/2 SQUAT RELAY W668 4-1 AREA WEAPON SYSTEM (A402) (AWS) WIRING DIAGRAM DIRECTORY (cont) REFDES COMPONENT CABLE PARAGRAPH WIRING DIAGRAM K4-1/2 SQUAT RELAY W668 9-1 AC ELECTRICAL POWER (A402) GENERATION K4-1Y2 SQUAT RELAY W668 9-28 SQUAT SWITCH (A402) K4-12 SQUAT RELAY W668 11-1 EXTERNAL STORES (A402) CONTROL K4-V2 SQUAT RELAY W668 12-1 DASE (BUCS DEACTIVATED) (A402) K4-1/2 SQUAT RELAY W668 12-2 DASE (BUCS ACTIVATED) (A402) K4-1/2 SQUAT RELAY W668 16-1 IFF (A402) K43/4 AFT AVIONICS FAN W668 10-1 ENVIRONMENTAL (A402) RELAY CONTROL SYSTEM (ECS) K4-5/6 AIR DATA SUBSYSTEM W668 2-1 AIR DATA SYSTEM (ADS) (A402) CONTROL RELAY K4-5/6 AIR DATA SUBSYSTEM W668 9-5 CIRCUIT PROTECTION (A402) CONTROL RELAY (AC ESSENTIAL BUS 1 - PILOT STATION) K4-7 ECS AIR SHUTOFF W668 10-1 ENVIRONMENTAL (A402) VALVE/ENGINE START CONTROL SYSTEM (ECS) INTERLOCK RELAY K4-7 ECS AIR SHUTOFF W668 23-1 POWER PLANTS (A402) VALVE/ENGINE START INTERLOCK RELAY K4-7 ECS AIR SHIUTOFF W668 25-2 ENGINE ANTI-ICE (A402) VALVE/ENGINE START INTERLOCK RELAY K4-8 ENCU RELAY W668 10-1 ENVIRONMENTAL (A402) CONTROL SYSTEM (ECS) K4-9/10 SQUAT RELAY W668 4-1 AREA WEAPON SYSTEM (A402) (AWS) K4-9/10 SQUAT RELAY W668 6-1 INTERCOMMUNICATION (A402) K4-9/10 SQUAT RELAY W668 9-28 SQUAT SWITCH (A402) K4-9/10 SQUAT RELAY W668 25-7 TAD/PNVS ANTI-ICE (A402) CONTROLS 1-108 Change 5