Get a coat hanger, and tape the wire on the end coat hanger. Take out the speaker pod, and just pull through. The rubber shoe can be pulled out on the door temporary so u can guide the coat hanger through the rubber boot. Next part is getting it inside the car, same deal. I ran 8 guage wire like this... so dunno about 1"

Oh, to get it in the car, u have to remove the bottom part of your dash. But just the bottom part, comes off with 2 bolts. (Where hood pin is hooked to) This makes it a little easier. Also, try not to "force" it in, might break some wires.