Rear Washer Jet

Does anyone have a drawing showing where the pipe is routed
as when i park on a hill the washer bottle empties itself through
the rear washer jet!!!! I think there is a non return valve or
some sort of check valve in there somewhere, I think it may be in
the rooflining but would just like to check before i start pulling
it to bit's.

Thank's

Jamie

Mine does this too. post up the solution if you find one.

I'll be pulling it to bits shortly and will take some pics

Last weekend, I replaced the rear door on our jimny with a spare sourced from ebay.
after removing the lock barrel, the door was a straight swap.
The washer jet mounts through the door via a rubber, and then runs horizontally to the hinge side, and though the flexi connection to the body. it then goes down behind the rear seatbelt spool, and up to the multi plug on the offside rear behind the rear trim panel.