ive never seen a how 2 for this and i thought i would do it when i tinted my lights

materials

wet wash cloth
paper towels
600gritt sandpaper
lil bucket of water
sticky scrapbooking letters
vht night shades

1st: remove ur third break light

2nd: clean it with the warm(or in my case cold since i dont have hot water in my shop) rag

3rd: apply ur sticky letters ( can be found at craft store or wally world... i stole mine off my mom, she scrapbooks alot!)

i chose the style of letters i wanted that would fit on the light and put them on there.. i chosse "trey ss" which is on my tags

4th: wet sand ur light evenly with the sandpaper till it is flat and dull looking.. make sure u dont destroy the letters in this step.. but sand around them as best as you possibly can!

5th: get ur nite shades... spray from side 2 side and alow for each coat to tack up before adding another.. i think i did like 4-6 coats.. then let dry or add clear if u want.. i didnt

6th: peel off ur sticky letters

there u go thats how ur customize ut 3rd break light..
sorry if this is a repost