TM 1-1520-238T-10 WIRING DIAGRAM DIRECTORY (cont) REFDES COMPONENT CABLE PARAGRAPH WIRING DIAGRAM XK2-1/2) SDC THROTTLE TIME W668 5-1 AUXILIARY POWER UNIT (A402) DELAY RELAY (APU) XK2-3 (A330) ENG 2 CLEAR RELAY W652 23-1 POWER PLANTS XK2-4 (A402) OAS HTR CONT RELAY W688 25-4 PITOT ANTI-ICE XK2-5/6 ENG 2 START RELAY W652 23-1 POWER PLANTS (A330) XK2-5/6 LAUNCHER DC PWR W668 14-1 HELLFIRE MISSILE (A402) ENABLE RELAY XK2-5/6 SP1 SPLICE W652 23-1 POWER PLANTS (A330) XK2-7/8 ENG 2 IGNITION CUTOFF W652 23-1 POWER PLANTS (A330) RELAY XK2-7/8 MUX/FCC PWR RELAY W668 19-1 MULTIPLEX (A402) XK2-9/10 ENGINE STARTER DROP W668 10-1 ENVIRONMENTAL (A402) OUT DELAY RELAY CONTROL SYSTEM (ECS) XK2-9/10 ENGINE STARTER DROP W668 23-1 POWER PLANTS (A402) OUT DELAY RELAY XK3 (Al ENGINE 2 FUEL VALVE W612 13-2 FUEL CROSSFEED/BOOST A131) CLOSE/ENG START RELAY XK3 (A128) RELAY SOCKET 20-3A DOPPLER NAVIGATION AN/ASN-137 (ADD) XK3 (A128) RELAY SOCKET 20-7 DATA TRANSFER UNIT (ADD) XK3 (A128) RELAY SOCKET 20-8 EGI (ADD) XK3 (A138) START RELAY W616 5-1 AUXILIARY POWER UNIT (APU) XK3 (A402) BLADE DE-ICE W668 9-1 AC ELECTRICAL POWER CONTACTOR GENERATION XK3 (A402) BLADE DE-ICE W688 25-3 ROTOR BLADES DE-ICE CONTACTOR XK3 SP1 SPLICE W688 14-1 HELLFIRE MISSILE (A402) XK3 SP2 SPLICE W668 14-1 HELLFIRE MISSILE (A402) L WIRING DIAGRAM DIRECTORY (cont) REFDES COMPONENT CABLE PARAGRAPH WIRING DIAGRAM XK3 SP3 SPLICE W668 14-1 HELLFIRE MISSILE (A402) XK3 SP4 SPLICE W668 14-1 HELLFIRE MISSILE (A402) XK3 SP5 SPLICE W668 21-2 RADAR JAMMER (A402) AN/ALQ-136 XK3-1/2 REMOTE SAFE DRIVE S1 W668 14-1 HELLFIRE MISSILE (A402) AND S2 RELAY XK3-3 (A402) RADAR JAM RELAY W668 21-2 RADAR JAMMER AN/ALQ- 136 XK3-4 (A402) REFUEL VALVE CAUTION W668 13-4 PRESSURE RELAY REFUELING/DEFUELING XK4 (A131) ENGINE 2 FUEL VALVE W612 13-2 FUEL CROSSFEED/BOOST CLOSE/ENG START RELAY XK4-1/2 SQUAT RELAY W668 3-1 AERIAL ROCKET CONTROL (A402) SYSTEM (ARCS) XK4-1/2 SQUAT RELAY W668 4-1 AREA WEAPON SYSTEM (A402) (AWS) XK3-5/6 LAUNCHER AC POWER W668 14-1 HELLFIRE MISSILE (A402) ENABLE RELAY XK3-7 (A402) FLAG RELAY W668 20-4 HARS XK3-9/10 REMOTE SAFE DRIVE S3 W668 14-1 HELLFIRE MISSILE (A402) AND S4 RELAY XK34 TAIL WHEEL LOCK W170 15-1 HYDRAULIC RELAY XK4 (A128) RELAY SOCKET 20-3A DOPPLER NAVIGATION AN/ASN-137 (ADD) XK4 (A128) RELAY SOCKET 20-7 DATA TRANSFER UNIT (ADD) XK4 (A128) RELAY SOCKET 20-8 EGI (ADD) XK4 (A131) ENGINE 2 FUEL VALVE W612 13-2 FUEL CROSSFEED/BOOST CLOSE/ENG START RELAY XK4-1/2 SQUAT RELAY W668 3-1 AERIAL ROCKET CONTROL (A402) SYSTEM (ARCS) Change 5 1-187