Review on AUXITO 400 Lumens 1.25 inch Canbus Error Free Festoon LED Bulbs - 31MM DE3175 DE3021, 3020 Chipsets for Interior Car License Plate Dome Map Door Courtesy Lights - Xenon White (Pack of 2) by Jerardo Phi

As always with Auxito LEDs, the lights are packed in a small cardboard box in anti-static bags. There was some sticky residue on the outside of the box - not ideal but it didn't affect the actual stats that were in the box. The headlights arrived undamaged. After a short visual inspection, the headlights are well made. The resistors and LEDs are placed directly on the board and are well aligned (not skewed or random) so it was nice to see that little detail. I used one of these dome lights (DE3175) on my 2007 Toyota Rav4, works great. It's a lot brighter than the halogen that was in its place before. However, when I switched off the light (transition between ON and OFF), I noticed a slight hum. The sound is a bit odd, but doesn't seem to affect anything else. Another light I tried to use to illuminate the trunk. The trunk light was originally DE3021 which means it was around 30mm long. These Auxito torches are 31mm long and while advertised as fitting the DE3021 torch position your results may vary. Here's why: I had the terminals in the socket open so I could bend the terminals a bit and insert the LED into the socket. The problem is, if these connectors weren't exposed, I wouldn't be able to install this LED because it's just too big to fit in the DE3021's socket. So keep that in mind. There seems to be a trend among LED manufacturers for DE3175 bulbs to fit DE3021 sockets, but this may not always be the case depending on the vehicle. In general a good product. I was just confused by the buzzing noise the one makes in the dome and disappointed that it was being touted as a replacement for the DE3021, although that may not be the case (depending on your car and definitely not without some modifications).