Wiper supply wiring. A4 B6
 

Hi, A local guy (i'm no longer in touch with) disconnected/adapted the supply to my wiper motor a while back. He said there was a reduced voltage but got the wipers working, just on fastwipe position on the switch.
I subsequently solved this (I hope) and other ailments by changing the relevant control module.
As the 'fast wipe' is now up to speed I was hoping to re-connect the other speeds. If anyone can second guess as to where he would have been likely to disconnect the wiring it would be a great help. Many thanks.