For those of you who have a Ford KA you might have wondered why it is that
you rear wiper sometimes works and sometimes doesnt.
The real proplem is that there is no earth cable from the rear tailgate
through to the main body with the only contact coming through the hinge of
I have found that consistent operation can be restored by greasing the
tailgate hinges with "coppergrease"...a grease which is loaded with copper
which is normally used as an anti seize compound but which also increases
conductivity through the hinge.
Another annoying little fault with the KA sorted!