Where is my lo intake valave for my a/c on my 98 dodge grand caravan

The low side fitting is on the passenger side of the car, near the compressor and the headlight area, close to the drive belt, about 12" away from the radiator. Locate the black screw dust a cap, looks similiar to a valve stem cap on your tire valves. The high side connector is located in the engine compartment, passenger side, near the fender well back towards the alternator and very close to the drive belt. The high side fitting is much harder to find than the low side, the low side is in the open. The fitting you have for adding R134a from the recharge kit will not fit on the high side. The high side fitting is smaller than the low side fitting. Thank goddness for that for if you were capable of putting the fron can onto the high pressure line, it would develope so much pressure from the high side, it would or could explode in your presence.
Please be aware that you need to wear protective eye and hand gear when working on an a/c system(freon can blind you if sprayed directly in your eyes and can cause frost bite when over exposure to your skin.
Happy Motoring!!