Tell her you'll do it only if she snorts a line of coke of your dick
After that's all said and done, find an aftermarket wire harness to go with the car...try
Metra Electronics, you are probably not from the states having a polo and all but I'm sure you guys have something similar there. Don't fuck up her wiring by snipping the wires from the harness and just splicing them in. Do it the right way or you'll be taking cold showers for the next 5 days.