Where do I connect recharge hose for AC on 240? on 1990 Volvo 240

I want to recharge the air conditioner on my 1990 volvo 240.

Asked by for the 1990 Volvo 240
This system uses R12 refrigerant, meaning you cannot recharge this yourself. It is possible the system was updated, but if it was there should be some light blue stickers in the engine compartment notifying you it has been updated to the R134 system. In this case, the fill valve is up near the r side shock tower.