Post by
IvoryJ30t »
https://forums.nicoclub.com/ivoryj30t-u9485.html
Sun Jun 27, 2004 9:48 am
trace the lines.
low pressure side runs from the firewall to the compressor. the high pressure lines run from the compressor to the condenser [a/c radiator] and back to the firewall.
there are other components [receiver/drier] in the path, but thats the basics.
low pressure port cap is usually blue, high pressure cap is usually black or red.