Okay, another quick a/c question. My 91' 740 was retrofitted for the 134a by the stealership a few years ago. There is the 134a quick connect fitting w/ a black small cap and a tag that says 134a. I attached the refill quick connect hose and filled it up. This connection is in the rear passengers side of the engin compartment and by, what looks to maybe the a/c dryer (silver colored oblong canister). I could not find anything else that resembled a quick connect for the filling of the 134a. I did notice a small threaded fitting down by the radiator. I loosened it and 134a started fizzing out of it, so I tightened it back up and here I am. On the kit, it said to find the quick connect fitting on the low pressuer line and fill it from there. Did I use the right connection, since I could not find another fitting anywhere? Thanks for the assistance.
Sam