Replaced the old light bulbs in my horse trailer with these and they are super bright! Installation of them was quick and easy just took covers off pulled out the old incandescent style bulbs and installed these LED bulbs in my 12 volt lights turned them on and they powered right up! I don't even need all 3 lights in the back of my horse trailer now could easily get by with the one at the front and one at the back! The bulbs use next to no battery either to run, which is great! The old light bulbs I had by the end of the weekend if I left the lights on in the horse compartment of the trailer the battery would be almost dead by the time we got home. Now I can use the lights for over 2 months without having to even plug the trailer in and charge the battery! Will definitely buy these bulbs again if I need some LED bulbs to convert my old lights!

My main worry with purchasing these was that one of the interior lights in my semi is reverse polarity, and the other is standard (verified with a multimeter). I've had various 1156 LED bulbs fail in the reversed socket, which is due to the nature of LEDs, but research indicates that higher quality LEDs can make use of any polarity, with the proper 'drivers'.

At any rate, I got these and gave them a shot - sure enough, they work in both sockets! I'm thrilled. They definitely get hot if left on, but not near as hot as incandescent. If you're expecting entirely cool, this isn't it. But an inch away, you won't feel any heat at all, and you can certainly touch them without getting burned.

As far as brightness, images don't do them justice. They are a brilliant white, which I prefer to the almost yellow of incandescent, and far far brighter than the brightest 1156 incandescent you'll find. I'd day that in my application, they easily rival daylight brightness, and certainly reduce eye-strain when I'm doing things in my truck at night.

In my picture, I've got bright incandescent bulbs installed in one fixture, and the LED bulbs in the other. Each fixture takes two bulbs... And they are literally the same fixture; same plugs, internal reflectors, and covers. They take the same voltage, but are on different circuits in my semi. These two fixtures even have the same polarity. And... Well. You can see the difference. And that doesn't even do it justice.

I'll gladly recommend them to anyone who needs an 1156 for just about any purpose.

I tested these in a 2015 Freightliner Evolution, in both the dome lights (standard polarity) and the map lights in front (reverse polarity).

CAUTION! MAY NOT 'FIT' WITHOUT MODIFICATIONS!!

I had already started a 'Return' on these as they simply would not fit into the bulb socket for the Back-Up Lights on our 98 Chevy Astro Van, which uses the 1156 socket for its Back-Up Lights. However I was also super-perplexed as to WHY they wouldn't fit as these bulbs have the correct configurations for an 1156 lamp. (These bulbs went into my wife's car perfectly, which also employs the 1156 bulb socket so the mystery of 'why' they wouldn't insert in our vans bulb socket holder deepened!)

Long story short, I had to take my Dremel tool and 'flare' the mouth openings of my plastic bulb socket holders, in order for the 'lip' of these bulbs to 'clear' and allow them to be sufficiently pushed down far enough into the 'guide channel' and then slightly turned clockwise to 'lock them in'.

I hope they last and that I don't need to file any warranty claims. For the time being they are bright and solidly in place, but you do need to be aware that if they don't 'fit' your particular 1156 bulb socket holder, in all likelihood its a 'clearance' issue with the rim of these bulbs, and you will need to be prepared to make the necessary modifications in order for these to be inserted to the proper depth, and then 'locked in'

So far so good on these bulbs. These bulbs are replacing some 1141 bulbs. The output color is definitely more white than the 1141. I've attached a couple of photos showing the light output of both bulbs. The camera exposure settings were fixed for both photos so you be the judge on which bulb is brighter. I think the LED lamp is slightly brighter than the 1141. I wasn't concerned with output color or brightness, just energy savings. These LED bulbs draw 0.30 amps (3.6 watts at 12.0 volts) vs. the 1141 bulbs at 1.4 amps (16.8 watts at 12.0 volts) based on my testing. It's great to be able to run almost 5 of the new bulbs for the same amount of energy as 1 of the old bulbs. I've been running 2 of the 5 bulbs for the past 3 hours with no issues.

10/15/17 update: I use these bulbs very little and had 1 of the 5 burn out last week. I would say the bulb that burned out had less than 6 hours of use. The other 4 bulbs are still working fine so far.

10/16/17 update: Seller is sending out a replacement for the dead bulb. Excellent customer service and very timely response to my issue.

I installed these in my 2007 honda pilot and they do look nice. With these, you have to take the door trim off and you must have a puddle light already on your door in order to connect it to your electrical system.
The wires on the light are extremely thin and you may not be able to strip them properly using the smallest hole on most wire strippers. Also, the drill bit that comes with the lights, doesn't make the hole big enough to fit the light through. You may have to use a dremel or a standard drill bit to enlarge the hole slightly to fit the light properly. In addition, you may wanna install them somewhere where you can see how they look before you close everything back up because there is no way to make sure the logo is not upside down before making the electrical connections.
Good luck.