I have a large light that I keep in my trunk that can be connected to my 9 volt cigarette lighter. I place this behind the wheel and shine it on the tank. For filling the tank, I use a turkey injector. It works for me. I also have a Stanley 450 volt battery jumper that has a 9 volt plug in it. I plug the light into the adapter. The stanley battery jumper also has an air pump that I use to inflate the tires.