power fault

Hi, I have a 2010 seat ibiza fr 2.0 I have a slight problem when turning at slow speed (20-40mph more or less) when in the turn the steering feels like it has a slow wobble like side to side but slow like if the tyres where wondering side to side it’s hard to explain, any ideas of possible...

Had water damage in my drivers window controls. Swapped it out and now have no power to the passenger side! Doors dont lock, windows dont work and car doesnt even recognise when you open the door. What have a i done wrong to cause this fault. Was working before i done the work. Please help!