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Message: <blockquote data-quote="sampathapg" data-source="post: 16194916" data-attributes="member: 364324"><p>That's normal because this relay is in parallel with the AC fan relay. If you unplug the AC fan relay you would get 12V only on one terminal. Next thing on this electrical line is the AC pressure switch. In some models it is located near the condenser and in others near the evaporator just before the expansion valve but always on the high pressure line. All you need to do is to physically follow the path of refrigerant line from compressor (through condenser, receiver/drier and expansion valve) to the evaporator. This is the high pressure line. The other line which runs from evaporator to the compressor directly is the low pressure one. AC pressure switch is a four or two terminal switch which is directly on the high pressure refrigerant line and is clearly visible if mounted near the condenser but a bit difficult to reach if located near the expansion valve for it the then under the dashboard. This switch must have one wire light green (coming from the temp sensor) and another BLU/BLK . Switch is normally closed.</p></blockquote><p></p>

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