TM 1-1520-238-T-5 7–66 Change 2 7–11. PRIMARY HYDRAULIC SYSTEM – WIRING INTERCONNECT DIAGRAM (cont) 7–11 PRIMARY  MANIFOLD 1 P J6 P239 C- D+ B- 9 8 HYDRAULIC PRESSURE TRANSDUCER NO NC DIRTY  FILTER INDICATOR (PRESSURE)  (NOTE  4) 14 13 NO NC HYDRAULIC LOW  PRESSURE SWITCH  (NOTE  3) 4 7 6 A+ C NO NC LOW  LEVEL INDICATOR SWITCH 3 NO NC 11 12 DIRTY  FILTER INDICATOR (RETURN)  (NOTE  4) 2 HP1 P P P A C D B GS430 W119 P1  OUT P/O  ELECTRICAL  POWER  DISTRIBUTION BOX (NOTE  6) P441 A2 A5 J24 P/O  DUAL  HYDRAULIC  PRESSURE  INDICATOR P265 D C J1 - + P1  IN PRI  HYD  PSI M28 P K L TB2 - 9 A402 W668 W119 1 C A J3 B D B J4 C A J1 C C J5 B (NOTE  5) E A(1) (NOTE  1) B(1) C(1) D(1) E(1) W119 A B G(1) F(1) (HI) 0-5  VDC C C NOTES: HIGHWAY  USE:    THE  ALPHA  CHARACTER  IDENTIFIES A  SPECIFIC  LINE,  AND  THE  NUMBER  IN  PARENTHESIS IDENTIFIES  THE  SHEET  NUMBER  WHERE  THE  SIGNAL TERMINATES. 1.    1.37   VDC / 1000   PSI. 2.    GND  INPUTS  TURN  ON  LIGHTS, UNLESS  OTHERWISE  SHOWN. 3.    OPEN  AT  2050  PSI  AND  ABOVE. CLOSED  AT  1250  PSI  AND  BELOW. 4.    CLOSED  AT  70  ±10  PSI  DIFFERENTIAL  PRESSURE. 5.    CLOSED  WHEN  RESERVOIR  FLUID  LEVEL IS  10  CUBIC  INCHES  OR  LESS  (APPROX.  0.06  GAL.). 6.    ELECTRICAL  SYSTEM  (TM  1-1520-238-T-6). 7.    HS  DESIGNATES  A  HARD  SPLICE  WHICH CANNOT  BE  DISCONNECTED. M  DESIGNATES  A  SOFT  SPLICE  WHICH  MAY  BE DISCONNECTED  FOR  A  WIRING  CHECK. M68-002-2B SHEET  2  OF  2