Can anyone help me determine if the air door actuator (604-879 from OReillys) will fix my vents that stopped working in my Civic 2011 Sedan? They said it should be installed on the passenger side. So far all we could do was plug it in, which showed us that the motor turned (good sign). We had to stop there because this piece is in a tight spot and we're hesitant to change it ourselves in fear of losing hardware. Does anyone have any advice for changing this ourselves or will we need a mechanic? Thank you.