why left front headlight wont work after replacing bulbs,fuses on 2007 Dodge Ram 1500

bulbs,fuses double checked,left front headlight(dim) stopped working. fog lights and right head light works fine,"will only work on bright"

Asked by for the 2007 Dodge Ram 1500
agree with #1 poss bad socket
1 more answer
I had a similar problem. I cleaned out the socket.I used a small screwdriver, few Q-tips. Just clean the contacts the best you can, then dab a little Dielectric grease, replace bulb. Otherwise you might have to replace the socket.