Made the fatal mistake of fitting HID lamps to the 407 and within a month the wipers circuitry was fried. It can only be one of two faults - either the 8 legged chips on the PCB's inside the wiper motor cases, or the BSI unit under the steering wheel. I more or less am certain its the wiper motors so have bought two S/H working units from a breaker. Then I heard nightmare stories about the difficulties of changing the motors and as I don't really have the time nor the facilities at home to do this myself, I thought I'd get a backstreet mechanic to put them on for me. He told me its a job for the main dealers, cos the motors have to be re-synchronised to the car and he hasn't got the equipment to do that. Does anyone know if this is the case? I cant imagine what it would cost at a main agents - they certainly would insist on fitting new motors for a start - then there's their hourly rate to consider. It could end up costing me more than the cars worth!