92 K2500 a/c wiring

A/C on control panel flashing. Think it may be electrical. The low pressure switch on the accumulator is closed. Does anyone know the states for this
switch. Is it closed on low-pressure or open on low pressure. Also, is there a separate fuse for the compressor? If so, where is it located? Does anyone no of a link/post of an Electrical print of the A/C system?
Thanks
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Solved this from: Lots of good information here. Automotive Air Conditioning Bulletin Board http://acsource.net/acforum/viewtopic.php?t 81&highlight+chevorlet

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