Almera, Equation 1997/98

hi there guys I wonder if you could help,

I have encountered a funny problem with my car,
Out of three wiper settings two of them 1st and 2nd doesnt work ,
Only on the fastest speed wiper works.......I donot knoow why ?

Any Help or suggestions...........

I have checked relay ok
Steering Assembly sems ok
Motor seems ok

If you have encountered this would appreciate help.

thanx

also how can I reset my car audio as I have lost the code some where,
Is there any website or trick I can get the audio system working ?

Please advis......................ta very much