Hello all, Does any one know what this light is and more importantly, what fuse or power source it is powered by ? It has a light unit that is feathered to the main unit by a 12 foot cord so you can use it to change a flat tire of some other reason where you need a little light. It has a crank to recoil the light back into the unit and a catch. It has a magnet to you can attach it the a fender or anything metal. I rebuilt mine out of a wreaking yard and I tested in the a continuity tester and the unit lights up, but I don't have power to the plug-in power wire in the engine compartment. Any help greatly appreciated. Thank you !