I'm getting started on this on my recently acquired LS .
I did this on my other roadworthy LS .
I made a stip of thin metal, about an inch wide and about six inches long .
I drilled a hole at one end to fit on the bolt that holds the headlight bucket to it's mounting bracket .
I drilled a small hole in the upper black fairing in the area in line with the headlight bolt .
Drilled a hole in the metal strap and used a tinnerman nut on the hole, then put a small sheet metal screw into the tinnerman nut .
https://www.lowes.com/pd/Hillman-2-Count-6-Black-Phosphate-Standard-SAE-U-Spring-Nuts/3013205You may not find a nut for a sheet metal screw, there are nuts for machine screws .
Been on my other LS for 9 years, no issues so far .
If you don't have the rubber 'gasket ' that goes the around the headlight, a thick foam strip will suffice .