My 04 Grizzly burned out a headlight so I thought this is a good time to replace both with high output lamps. My Yamaha dealer had some China bulbs at $18.00 each so I picked up two. On installation I found one was right but the other had the high and low reversed. After careful inspection to make sure I hadn’t installed it upside down, I returned it, got another but found that one also reversed. I didn’t want the dealer to think I was nuts so I hooked up a 6 volt battery with enough amps to just light the elements and went back with the bad bulb and the original Yamaha bulb for a show and tell.
Not only were the bulbs I bought reversed but all of his new stock were also reversed! I have no idea how many he sold before I pointed this out but there has got to be thousands of these Chinese bulbs out there at stores.
I went home with Yamaha bulbs, they are much better quality and worked just prefect.