Join Date: Dec 2005
Nominated 2 Times in 20 Posts
TOTW/F/M Award(s): 18
Thanked 1,103 Times in 942 Posts
The wipers and heater blower share the same earth.I have had this before,and there are details about it somewhere on the forum.
To check,run an earth wire to the body of the wiper motor.If that sorts it,then the earth is faulty.I can't for the life of me remember where it's to,but I'll try and find the thread about it and post a link.
I'd rather push my Alfa than drive a BMW....
Currently in Lagdti's garage:
2004 Saab 9-5 HOT Aero and a 2001 Audi A3 1.8 Turbo