I did everything you said. I am getting 12 volts at the light assy and tried a new bulb no help. I even replaced the hardware holding the ground wire to its grounding point. I am taking with me to the plane a double ended ohm meter lead so I can bypass the ground wire like you suggest. Will let you all know what I find. I worked on avionics on C-141s for 20 years and have never been so flustrated by a problem on a plane.
