I am currently working an evening shift, and really notice how dim my headlights are. Driving through a construction area with no lighting or reflective lane markers and no other traffic, it is difficult to see the roadway. I polished my headlights this morning which made them look much better, but I also want to check the grounds for them. I couldn't easily trace the ground wires, but there is a square white plastic tab thing on ground wires about a foot away from each headlamp, that perhaps is the ground. Can anyone confirm? I measured the resistance at the ground wire headlamp connection to battery negative post and got a value of 11 ohms on both sides. Is this a normal range? I haven't yet disturbed the grounds.