NG LIGHT TO BLEED AIR PRESSURE INDICATOR TO VALVE OPEN / CLOSE /WATCH LIGHT ON (OPEN) 20 TO DOOR SEAL SYSTEM 21 TO TOTAL TEMP PROBE LN SERVO CONTROL SYSTEM TO YANG ANTI - ICE SYSTEM PICCOLO TUBES TO MR CONDITIOMNG SYSTEM 32 25 9 TO OVERTEIAP WARNING LIGHT TO RI FFD AIR PRP SNAP