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enginboy

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  1. Thanks in advance to anyone that can help me. I have a 2000 CH 613 with a AC problem, I have the schematics that come behind the power distribution cover in the cab. But they don't cover the diagnostic blink box mounte to the side of the radiator. Can someone supply me with a pin out for the 9 wires that go to this box, I think I am missing a power feed to the box ,(the 10 amp fuse located behind the relay) is good. The red LED is blinking 4 times for open pressure switch or circuit. I have bypassed the pressure switches and checked continuity to the box. The low pressure switch seems to be open all the time ,But I have another problem because I cannot get power to the compressor clutch.. \ If anyone has a schematic or can help me out I would greatly appreciate it Also could you give me the info on the low an high pressure switches , when they are supposed to be open and when they should be closed and what the pressures should be. Regards Marc
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