TM 1-1520-238-T-5 7–98 7–22. UTILITY HYDRAULIC SYSTEM – WIRING INTERCONNECT DIAGRAM (cont) 7–22 NOTES: HIGHWAY USE: THE ALPHA CHARACTER IDENTIFIES A SPECIFIC LINE, AND THE NUMBER IN PARENTHESIS IDENTIFIES THE SHEET NUMBER WHERE THE SIGNAL TERMINATES. 1. ELECTRICAL SYSTEM (TM 1-1520-238-T-6). 2. FLIGHT CONTROL SYSTEM (TM 1-1520-238-T-7). 3. CLOSED WHEN ENERGIZED. 4. 1.37 VDC / 1000 PSI. 5. GND INPUTS TURN ON LIGHTS, UNLESS OTHERWISE SHOWN. 6. ACTIVATED WITH ROTOR BRAKE ON. 7. OPEN AT 2050 PSI AND ABOVE. CLOSED AT 1250 PSI AND BELOW. 8. CLOSED AT 70 ±10 PSI DIFFERENTIAL PRESSURE. 9. CLOSED WHEN RESERVOIR FLUID LEVEL IS 10 CUBIC INCHES OR LESS (APPROX. 0.06 GAL). 10. SHOWN WITH THROTTLE IN ADVANCE POSITION. 11. 12. HS DESIGNATES A HARD SPLICE WHICH CANNOT BE DISCONNECTED. M DESIGNATES A SOFT SPLICE WHICH MAY BE DISCONNECTED FOR A WIRING CHECK. M68-102-7 SHEET 7 OF 7 1-2 X 2-3 X X 4-5 X X 5-6 X 7-8 X X 8-9 X 10-11 X 11-12 X X X-INDICATES CONTACTS CLOSED BRAKE OFF LOCK RTR BK SW INDICATOR POSITION CONTACT P/O PILOT MATRIX MODULE P527 J527 J9 P487 J16 P480 B8 B7 A9 A10 B5 B6 K A E D A K E D TB1-31 TB1-32 J6 P473 A12 A13 A11 A10 P746 J1 B A J2 R4 J9-A4 _J9-A30-5 VDC (HI) (LO) CHANNEL 1 NO. 2 ELECTRICAL SYSTEM 3 1 2 M29 A331 A331 EMERGENCY HYDRAULIC SWITCH PANEL EMERGENCY HYDRAULIC PRESSURE INDICATOR TAIL WHEEL PANEL J1 EDGE- LIGHT (HI) (HI) (HI) EDGE- LIGHT 0-5 VDC 0-5 VDC 0-5 VDC W646 A326 W119 W645 W118 EDGE- LIGHT