Excellent info, i too managed this to 3 hours, however, the wiper motion is now incorrect.The wiper moves through the correct motion when switched on (any setting) but when switched off they finish half way upi the screen? Now when diagnosing intial problem with the unit on the bench, I disconneted the wiper motor from the linkage to see what had seized. Should the motor spindle have been in a particular postion or have i got another problem to do with the control unit? Slightly puzzled and in need of a few pointer. Thanks Ad