[Wake]

you would have to go through the entire maxima wiring harness and fuse pinout and find a way to splide it into your existing cicuit.

You already have a couple really good responses as to how you should go about this. I suggest you take one of those routes.

I actually was planning on doing this as well and have gotten my anwers how from this thread.
Stop looking for an easier way out and apply yourself. It may turn out even easier than you think and you will be more proud of the effort in the end.