This is one has me stumped, I have removed probably 20 different headlight assemblies over the years but have never run into this issue. I pulled out the headlight on my buddy's 06 to change out the fender, and when I put the assembly back in, only the low beam won't work. It is very straightforward, 3 plugs which I pulled off and put back in, so what could cause it to stop working? I checked fuses which are all fine, and tried a new bulb which also did not work.