Seems silly replying to myself but I found the problem. My car is a 1995 Volvo 960 Wagon in line 6 cyclinder gas engine. 2.3L There is a rubber rectangular drain (very stretchy) from the bottom of the air conditioner unit on the passenger side of the Volvo 960 hidden behind the carpet. It is attache...

First time on forum so this may be answered somewhere I haven't yet discovered.
Several litres of clean water (no antifreeze) on passenger side floor and rear.
Assume a/c condensation tank is plugged and overflowing.
Where is it? and how can I clear the blockage?