Hi
Are these the proper ones or refit fit?
Fitted Bosch Aero twins (retrofit) to the
Mk1 Leon a week or so a go. Performance - very, very good - especially at high speeds - according to my mate who had his R/Rover @ 120mph and they were still clearing nicely (that's got to be flat out!)
If they are the same as mine, the cap covering the clip that attaches to the arm is hinged. I think give the cap a squeeze and pull slightly away from at first and it should open up. You then feed the arm through the hole of the hinged cap and feed the clip (in the blade) int the end of the arm. I did this on the windscreen almost in situe (felt this was easier), then once happy all in, pulled the arms up and gave the blade a tug (like uncorking a bottle of wine - you'll know
how to do that bit!) - clicked home. Flipped the caps back over and thats that.
Sounds complicated but isn't. I assume that its either the cap you haven't hinged back yet or the feeding of the arm to the blade. If the latter, try it on the windscreen rather than with the arms up - just be careful with the glass though incase that arm snap back!
Lastly sorry for wasting your time if these are not the wipers you're looking for (old jedi mind trick)
The instructions were on the packet tho.