On ebay I bought a Fiat punto 1999 rear wiper blade & arm. After some
minor modification this should fit my C1. The wiper is larger then the
standard one and should wipe the rear screen a lot higer than the
standard wiper.
First up is to to remove the rear wiper including the arm. Lift up the
cap.
Fitting the new arm is the reverse, just put it on and tighten the nut.
As you can see below the new wiper reaches much higher and clears to the
top of the window.