Originally Posted by IBLUBYU
I just received my order from "factorykiss" in China, and was shipped the wrong size bulb. I have emailed them advising that what I received was 33mm instead of 36mm.
The order was supposed to be for the rear license bulbs. I'll see how they resolve this. Worst case scenario is that I'll be out $9.90. I advised them that I will not give them a favorable feedback on eBay, unless It is resolved. I'll report back with their reply. Stay tuned
While I am sure you want the correct bulbs, upon taking the lenses out, you will find a 33mm will work as well, but it will not 'seat' in the lenses properly, up to you to test and see if it meets your standards, but I had a few festoon style bulbs that were a few mm off and I just slightly modified the metal contacts and no issue. Since the metal contacts on the rear plate just snap the bulb in place, you should have no issues with a smaller bulb.
Be careful, the last 3 XFs I have done plate bulbs on have had severely degraded lenses to the point where when I unscrewed the lense, they would practically fall apart. Since they are so discolored, I replaced them anyway, and boy, what a difference $25 new lenses make
Good luck Howard, give me a shout if you run into any issues.