Hi, I have a 2005 Ford Five Hundred, Limited Edition.
Most a/c low ports on cars are usually in the front of the engine in clear view. I think that on this car it is located on the passenger side, near the fire wall? If I'm wrong please let me know. If yes....
*What is the difficulty level in accessing and recharging this a/c low port?
*There is a unknown small black box with a cap of sorts blocking access to this a/c port. I can't get my hand behind this box type thing to get to the a/c port!
*What is this small black box type thing and can it be removed, etc to give me a clear access to the a/c port?
*If so, can you please provide to me steps in doing this?
*Any online videos for this dealing with this particular Make and Model and Year?

Thank You so much for taking the time to address this for me!
Tom