Where is the low side valve at on a 98 Grand Caravan?

I don't remember which one is high or low, but If i remember right my 97 had one down between the motor and the radiator, near the compressor. And the other was next to the strut tower on the passenger side. It's probably the same on the 98.

The Low pressure side is bigger for vacuum, it also a different fitting for safety.

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That got it done!!