goto radioshack and buy some Bullet Wire Connects

also have a Good pair or wire strippers handy to crip them connecters.

heres how the power wire on my neons is wired up and where it goes thru the firwall at.



wheres its attached is where the power from the battery hook to the fuse box. its held down by a screw. I unscrewed the screw, attached a loophole type connecter to the wire and then put it under the screw when i tighten it, or you could just wrap the wire aorund the screw when you put it back in. And dont forget to install an Inline fuse holder at most 1 foot away from where the power source is.