[s-cars] Intermittent wiper relay

[KBATTPO]

Folks,
I have just installed 3B0 955 531 and tried to activate it as per the
Audiworld article found at: http://www.audiworld.com/tech/int26.shtml

Then I did this:
'To use it you first place the wiper switch in the intermittent position
and turn it to off. The wiper will wipe once. When you need the wiper to
wipe again, you place the wiper switch to intermittent and it will
remember the time interval and repeat the wipe at this interval. To
change the time just turn to off it will wipe and then turn to
intermittent position to set the new time interval."

Weel, this does not change the fixed 5 second interval. What am I doing
wrong?

Igor