Air Conditioner

Egroth asked this question before but noone replied. Is the low pressure side of the air conditioner on the accumulator or what. You would think that it was because it is easy to get at. I bought a few cans of the R-12 to fill my 84 944, but it doesnt want to take it. Its like a virgin for the first time. And another thing, those stupid ass haynes manuals dont teach you a damn thing or help you out. Take it a registered technician it says. Well you know what, I own two porsches and been working on german cars for a 8 years so you all know I cant afford to be sending it to some tight ass dipshit. Someone please help.. Thanks guys.
Ps. yeah, I know, Im a crybaby.

Thanks, I feel the same way. It isn't a difficult question. Somebody has to know. If that is the low side port and I have way too high of pressure, does that mean the expansion valve is bad or is the system clogged?