I have a 2004 automatic cooper hardtop. Figures today when the temperature here in Rhode Island reached 107 the A/C starts to blow hot!!! Just need to know where the correct fill point is so I can recharge my baby.

 

Can't find a picture, but there is a black cap on the driver's side, which is horizontal and points towards the driver's side. It's near the headlight backing (black oval.) There is a smaller one which is lower and more toward the front, but that is the high pressure side, so you don't want that one.
It's pretty much the only black cap in the area. Unscrew it, and your recharge fitting will clamp on.

 

The hose that comes with the can only work on the correct one. As noted about it is right about where the hood release is and the one the hose fits on is the right one.

 

Thanks Guys! Trying it tomorrow, still way too hot out there with no shade...
Wish me luck.

 

The main point is not to overfill. I would suggest buying a can with a gauge if you don't already have one, and check the low side pressure before adding anything. Add a little then check again. I'd take temp readings at the dash vents too so that you know when it's starting to work well enough. More R134 is not necessarily better, so only add until it's working and then stop.
What the others have said about the fitting is correct - it's pretty easy to find once you have opened the hood, and your connector will only fit one of the taps so you can't get that wrong.

 

around here I can get a simple a/c check of the pressures and a leak check for $20 at any decent full service mechanic. Many times people shoot in a can of gas only to find they just vented it straight to the atmosphere and wasted the money they tried to save. Even if I decide to fill myself I find that verifying the system is intact first to be money well spent. Then if I do have the service place fill it they charge me for what they use by the lb and do not overfill . . .

Just one of those things that is environmentally wise to do right the first time and to do right really requires a set of a/c gauges and a leak tester . . . I know folks who think shooting in a can or two a month is saving them money . . .

 

You can get a set of hi/lo side A/C test gauges at Harbor Freight for $40 if you look around online for a coupon. I bought them to check my system before adding anything to it. I've got two cars, so I figured for $40 I was even checking them both this season, any coming out ahead in the future. They can't really tell you how much refrigerant is in the system (since it's always a mix of liquid and vapor, depending on temperature), but will tell you if you're low enough to want to add some.