im confused,it looked like a simply plug and play DIY and then got a lot more complicated.few questions.1 im assuming the switch for the heated seats isnt already there correct?2 on a scale of 1-10 how easy is it to pull out the carpet.3.is unbolting it necessary?sliding the seat back all the way wont get the job done?4.this installment of heating elements and other wiring necessary or did u just go above and beyond for your satisfaction