Just a heads up for anyone thinking about buying the Helix ones. I got some on Ebay for $25 and they turned out to be Helix branded. I also bought some clear silicone sealant from home depot and applied it to crack between the gray and clear sides of the housing. Hopefully they won't leak.....
https://rover.ebay.com/rover/0/0/0?m...2F192664711181