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Re: Question about recharging AC
The low side port is where you replenish the R134a refrigerant. The port is located by the firewall below the alternator. The lines it is on feeds the evaporator core. There is a blue cap on it.
You can check the AC compressor relay by feeling or listening for a click and better yet with a multimeter. The relay is a micro-relay and plugs into a socket so it is removeable. You'll need to get a good grip to pull it out. Try rocking it side to side gently while pulling it out. Good luck!
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