Great thread, thanks guys. Yesterday I heard a bang just short of home, while I was working out what it was the engine stalled, totally confused! The bang was the offside wiper ball joint coming apart and the stalling was me not dipping the clutch! The plastic female part of the ball joint had lost the domed cap section and didn't look too happy, clipped it together again but that lasted for two wiper sweeps! Following the instructions here I had no problem removing the link arm and (surprisingly) the wiper spindle, just fell out. Thought I would share a photo and description of how I fixed it. I've heard about using a bolt but couldn't see how that would work. I trimmed off the broken plastic down to the main part of the ball joint, drilled a 1/16" (1.8 mm) hole through the short cylindrical part of the metal ball joint (in a pillar drill) and assembled the joint using a thin washer and a split pin. Quite chuffed that this worked and should be a permanent fix, ought to look at the other spindle as I didn't know this was a common problem. It's a mystery why it failed. Cheers http://i189.photobucket.com/albums/z224/Nimbus227/PC207303_zps36d7239b.jpg