Hi All,
I am trying to work on my AC system, converted to r134a long before I owned the car. Me and a friend cannot seen to find the high pressure (or high side) connector anywhere. We easily found the low side (blue capped valve), but I swear there is no red capped valve anywhere to be found. Does anybody know where it might be located on a 1984 300D?

Any help would be greatly appreciated.

Thomas