Ok, I finally found a yellow one, snatched it up and compared it to mine when I got home. Too small, PISS! I searched the entire base and came up with a few more but they're green and black so having the LED's shine through is out for them. I'm actually deployed and won't be home till late October, if I were at my home station I know exactly where 10 to 15 yellow ones are but thats my luck. Other shops usually throw them away when they change components so I'm lucky to get these. Anyhow, as you can see from the pic's the black one is longer than the green, but it can be cut down, and the green one...well unless you have a green bike. Stupid looking IMO. You MAY be able to heat the yellow one up in some hot water and stretch it over the top but I measured it to be 7/8" across. Its doubtful. The other two will be a snug 1" like mine. Option two, cut a hole in the cap like I did and trap some clear plastic underneath it to keep crap out, at least you can replace the clear when it gets ragged. If you go this route try putting it on a scrap piece of PVC and use a sharp exacto blade to cut the hole otherwise it will be lopsided. I ruined one by holding it in my hand while cutting. Option three...You get the clear one you found. I can and will keep my eyes out for other yellow ones from now on just in case. I actually don't get water in mine because I use a spray cleaner/wax/polish on my bike, it works well. I hate using soap and water, if I get stuck in rain I cover it with a glove or rag I have in my tool pocket. Since that's not always feasible I have considered carefully filling the top part of the shift light with clear silicone, the red lights will (should) be just as visible and water proof. Ive had my light for so long I may just try it. If it craps out on me oh well. I have a rev limiter and usually bounce off that first before I shift anyway. LOL
Let me know what you think, I'll send'm and you can decide or shit can them...and go with the plastic one, its up to you.
Kenny.