http://imgur.com/a/1T7wB

A friend of mine is interested in buying a 6volt generator light set from me. I need to make sure it all works before giving it to him. I tried it this morning but results were inconclusive. I own a multimeter but really don't know much about using it. We can get into that later.

Here are my questions and details as I understand them.

It uses a single wire to the head lamp. A second single wire goes to the rear light. The generator grounds using a pointed screw into the frame. Upon visual inspection, the filament in the head lamp bulb looks broken. I tried the rear light on the generator by just holding the gen against the tire by hand but the rear light remained unlit.

I don't know where to test the generator with both probes as the gen only has one contact.

Any advice on how to proceed would be greatly appreciated.

Thank.