Copy of PM I sent to TheGreenThing
G'day mate
To seal my light bar I ran clear silicon around the edge of the glass.
I drilled 3 holes in the bottom of the light bar body, lined up with the space behind the reflector. Sorry I don't have any pictures of this, but the easiest way is to line it up with the end cap off. The holes are about 2 inches from each end and 1 in the middle.
I used a 3/16 drill bit.
I still get a little moister inside the bar when driving in heavy rain, but it dries out quickly when the sun comes out.
![Image](http://i644.photobucket.com/albums/uu164/venn_1983/4wd/DDE96161-4B03-4168-82D9-3C8C6CC39948-151-0000001D5204ABEA_zps269f50f4.jpg)
Hope this helps, if you have any more questions just ask
Andy,