My employer has a mechanic that works on all of our company vehicles and I had him do something minor to my 98 Wrangler, don't remember now what it was he did. But, when he brought it back to me, my right headlight was dimmer than the left. I thought I needed a new bulb, so I changed it. Same thing, still dim. Changed both headlight sockets, still dim. Checked the ground and cleaned it up . . . still dim! WTF!!!