i used teh glove box light wires, and tapped off them. i didnt have a light in the ciggie lighteer so i cudnt use that.
one note however if you do use the glovebox, u have to tape down the switch thing that rests against the glovebox door.
when teh glovebox is opened it releases the switch and the light goes on. easy to just pull it out and tape it down so that u dun have to open the glove box to turn your gauge light on