Rear wash pipe
 

Not driven the car for awhile but in it today n tried to wash rear screen n got a wooshy sound down to the left by passenger A pillar so presume leak as just a small amount of water hit the rear screen. Can anyone point me in the right direction as where to start to find the pipe?

Wet ride back n reversing sensors then not working so what’s the 3rd thing that’s gonna go wrong?! Bugger!