Windscreen washers doing what they want

[04-182]

Hi,

I hope someone can help me with this. My front washer jet stopped working properly so I followed a post on here. Stripped it all out and fitted 2 new pumps. When I tested it everything was fine. With a grin on my face I checked it again and that's when it all seems to have gone wrong.
Now when I operate the front washer the rear one squirts. Operate the rear washer and the rear one works. It can't be that hard, its 4 pipes and 2 connector but I have no idea what its doing. Oh and my head light washer was working on the left light and not the right but has now swapped to working on the right but not the left.

Help please.

 

[04-182]

Quick update. All sorted now. Guess it was a rookie mistake. I followed 2 posts at the same time. One on how to replace the pumps and another which recommended warm water in the bottle to clean the pipes. Turns out the warm water makes the rubber valve expand and stick. Obvious now (and I tried it again to test my theory) but could not figure it out last night and was losing the plot.