I added this light to my bush hog, along with a pair of 7" bars and a 12". They're all bright and serve their purposes very well and I am overall very happy with my setup. I always seal around the lenses and ends with clear silicone. Lots of humidity here in Bama. I put them each on their own relays and fuses (the pair being on a single relay/fuse), with this one on its own switch and the other 3 being on one switch. I can say that the math simply doesn't add up on this one. I purposely bought an oversized relay for it... 540w ÷ 12v SHOULD = 45a. I'm running it off a 30a fuse. No problems. My purposes were to be able to mow at night and it serves that very well and has a good spread of light. The 16 or 18ga wires coming out of it should've been a dead give away. Just a bit of Chinese advertising, I guess.