Please remove your negative terminal on your battery once u decide on what wire your going to use.
Ok well here we go. I first was planning on running a wire from under the hood, but after some though I figured it would be easier / a shorter run if I just found a wire in the car that already had constant power going to it by using either a test light or a multimeter.
And if you want to use another wire im sure one of these may work out well also
Im short on time but pictures are worth a thousand words, if you have any questions just post em. but it works.
Make sure u totally cut the positive wire so that you will not be sending a constant 12v signal to the rest of the components on the other side of the wire.
I should have used one of these to tap into the line to make it look clean, but I couldn't find them in the garage so I just used a razor to take the cable housing off. Its not like its going to be visible any how.
Ran the wire around the back