Stuck under vader's castle
I'm currently stuck on the level where I have to get into Darth vader's castle with Kyle.
He is holding a power coupling up in the sewers and I need to drain the water out somehow.
Can't seem to find any way to do this or any real place to go to look.
Have tried jumping up into the hole in the roof as that looks like it goes somewhere, but I can't quite jump high enough.
Any help appreciated.