d. Connect 120 Vac 60 Hz power supply to term- inals 4 and 12 of the control box relay assembly. Measure voltage at terminals 6 and 10. Voltage should be 120 Vac (fig. 1-1). e.  Measure  dc  voltage  across  relay  K6.  Voltage should be above 18 Vdc (fig. 1-1). 3-11. Control Cubicle Wiring Harness. Rebuild wiring harness if inspection reveals 30 per- cent or more defective wires.    Wiring  harness  re- building instructions are described in Chapter 5. Otherwise replace damaged wires. 3-12. Control Cubicle Reassembly, Testing and Installation. a.   Reassembly.   Refer to Operator and Organi- zational  Maintenance  Manual  and  reassemble  the control  cubicle. b.  Testing.  Refer  to  the  Operator  and  Organi- zational  Maintenance  Manual  (Control  cubicle, s thematic diagram) to test the assembled control cubicle. (1)  The  following  control  cubicle  component tests are described in paragraphs 3-6 through 3-10 respectively_: Ac  Wattmeter Converter Ac  Ammeter Frequency meter and transducer Control  box  relays (2) Wiring test. ( a ) Using an ohmmeter, check the wiring from each-pin of receptacle J1 to the last point of its   connection. ( b ) Where the wiring of two or more pins of the receptacle can be tested by a switch closure, close the switch and complete the teat. After com- pleting the test, return the a switch to its normal position. (3) Oil pressure gage  test. ( a ) Connect the positive lead of a variable dc power supply, adjusted for 28.5 Vdc, to pin small w of receptacle J1. ( b ) Connect the negative lead of the power supply via a 0-50 ohm 100 watt potentiometer ad- justed for 15 ohms to pin V or receptacle J1. ( c ) Turn on the power supply and wait 3 minutes. ( d ) After 3 minutes have elapsed, the oil pressure gage should indicate 60 psi. ( e ) Turn off the power supply and disconnect the  test  circuit. (4) Water  Temperature  gage  test. ( a ) Connect the positive lead of a variable voltage dc power supply, adjusted for 28.5 Vdc, to pin small w of receptacle J1. ( b ) Connect the negative lead of the power supply via a 0-2K ohm S watt potentiometer adjusted for 917 ohms, to pin W of receptacle J1. ( c ) Turn on the power supply and wait 3 minutes. ( d ) After 3 minutes have elapsed, the water temperatike gage should indicate 180 degrees F. ( e ) Turn off the power supply and disconnect the  test  circuit. (5) Fuel Level gage test. ( a ) Connect the positive lead of a variable voltage dc power supply adjusted for 28.5 Vdc, to pin small w of receptacle J1. ( b ) Connect the negative lead of the power supply via a 0-50 ohm 100 watt potentiometer adjust- ed for 15 ohms to pin X of receptacle J1. ( c ) Turn on the prover supply and wait 3 minutes. ( d ) After 3 minutes have elapsed, the fuel level indicator should indicate one-half tank ( e ) Turn off the power supply and disconnect the  test  circuit. (6)  Total  Time  indicator  test. (8) Connect the positve lead of a variable voltage dc power supply adjusted for 28.5 Vdc , to pin small w of receptacle Jl. ( b ) Connect the negative lead of the power reapply to pin small r of receptacle J1. ( c ) Turn on the power supply. ( d ) Observe the tenths column of the indica- tors digital read out. ( e  )  The  indicadicator  shall  display  one-tenth after  six  finutes  of  operation. (f) Turn off the power supply and remove the test leads. 3-7