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Ari, I tried it and the clutch doesn't operate with the ignition ON and the engine not running.
Per the FAQ: "In 740 cars, remove the connector at the low pressure switch on the accumulator/dryer (the aluminum cylinder at the firewall). Jumper across the two terminals inside the connector (a paperclip works fine). With the AC set to on and the engine running, the compressor should engage IF the terminal inside the connector is receiving +12V power via the 10-second delay relay behind the glove box."
In my case, the clutch clicks in when I do the above test, but not with the engine not running. That tells me I have low or non-existent refrigerant pressure. I stopped by at a shop that was supposed to recharge my system (converted to R134a) for $50 cash, no questions asked, but he was swamped with work, so I'm going back later. It's either that, or get one of the kits. My problem with the kits is that nobody's sure whether the system has to be evacuated first. I suppose if I get a kit with a gauge, I can just fill it till it reaches the correct pressure.
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