where is the low pressure port to fill up the freon ? on 1996 Audi A4 Quattro

i can only find the high pressure port if any one can help with this i will appreciate it

Asked by for the 1996 Audi A4 Quattro
It is on the intake line side of the evaporator, illustration is poor appears to be on the front side near bumper level.
you mean it is inside the dashboard or in the front by the radiator? because i can only see the high pressure/ can you be a lil more specific?
1 more answer , 2 more comments
A 1996 Audi A4 does not have a low pressure "port". It only has a low pressure switch that can be removed (jumper the switch connector), replaced by a 82272 Mastercool adapter that you can recharge through. I'd suggest you search a bit on the Internet, and you'll find a very useful page on how to do this.
thank you very much i have just bought the adapter
I'm having the same problem. Where can I buy the adapter