okey dokey!!!!
the dash is in 2 sections top and bottom.
take the bottom half out, it's easy there are sever screws in the fuse panel and 2 screws on the underside (near the tray under the steering wheel on the side of the center console)
this panel then pulls off, remember to unclip the wire for the fog + dash lights
then undo the fuse panel on the very right side let it hang down and push it out of the way.
there are loads of fuses and wires under there, get as much of that out the way as possible, it's a royal pain in the arse!!!!!!!
if you pull the door seal off near the fuse panel you'll get a better view at what i sealed. have a look in the gap that this creates (use a torch) you should be able to see the darker coloured weld/seal i'm on about. there is a leak on that
leave a hose pipe running slowly, on the drivers side of the windscreen and keep looking at the seal, you'll see water coming from it
hope that makes sense, let me know how you get on.
i'll try and
help as much as i can (it's really difficult explaining it)