2pcs 1157 Bay15D 18 SMD 5050 LED STOP BRAKE TAIL LIGHT BULBS 12V-RED

I would not recommend these bulbs at this time.My wife and I installed these (1157 Bay15D 18 SMD 5050 LED STOP BRAKE TAIL LIGHT BULBS 12V-RED) LED bulbs on our travel trailer. We noticed these bulbs did not fit in the socket nearly as well as the incandescent bulbs we were replacing. We thought we would give the bulbs a try anyway because, after all, they were supposed to be long lasting and we did not want to waste our money by not using the LED bulbs we just purchased.After installation,we could immediately see these LED bulbs were not nearly as bright as the incandescent bulbs had been. Actually, there was only a minimal (but probably legal) difference in light intensity when the brake/turn signals were activated while the parking lights were on. We had hoped these bulbs would be bright so drivers behind us would not run over us when we were braking or turning.With the new bulbs installed, we pulled the trailer about 150 miles and parked for three days. When we checked the lights for the return trip, we saw one of the bulbs had lost its parking light capabilities. We replaced both of these LED bulbs with the very same incandescent bulbs we had replaced a few days earlier and came home.We paid $5.99 for the bulbs with free shipping through Amazon Prime. I filed for a return to the seller through Amazon.com. The seller authorized a return to China but we must pay the return shipping which is a minimum of $6.16. A 17 cent loss on our part not including the packaging costs and fuel to go to the post office.Since our bayonet sockets are at a right angle to the roadway, bright LED bulbs that shine 360 degrees but cost less than $50 a set are hard to find. We are going to wait until the quality to cost of LED parking/stop lights levels out some prior to trying to replace our incandescent bulbs again.

These bulbs have two different brightness levels that seem to be full bright and half bright. Which works OK. They do have one design flaw in that they allow current from the tail light circuit to bleed into the stop lamp circuit. If a LED third brake light is in the circuit it will glow whenever the tail lights are on. This type of flaw could be eliminated with a couple diodes in the circuit within each bulb. They may work in some vehicles with a third, high mount, incandescent brake light but I personally don't know of any that use incandescent bulbs for that purpose anymore.

Tried in a hyundai accent and 69 chevy truck.Good: The red LEDs give the tail lights a deeper better red color. Turn on quicker.BAD: The biggest problem and the reason I took them out is, there is almost no difference in intensity when applying the brakes. That is a huge safety issue and defeats the benefit of turning on faster than a regular bulb to avoid being rear ended.The only way I could recomend this if your taillights have a set up where 1 bulb is the running light (this LED, if fits would be nice) and another bulb that turns on when applying the brakes (regular bulb or brighter LED).I tried to take pictures but my cameras capture the light much different then seeing in person.*I've tried numerous LED's in different applications and my conclusion is, LED's are not usually brighter, but give a better quality of light and come in a variety of colors.

I have switched the bulbs in my motorcycle to LED's and the difference is amazing...These "tower" bulbs hit the sweet-spot of my tail-light housing reflector and produce twice the perceived light output as my standard incandescent lamps... and at only 1-3W of power power usage, compared to the old bulb's 8-23W.If you have red or clear reflectors on your tail-lights, you must replace your incandescent bulbs with RED LEDs, as they will be brighter than white LEDs by the nature of light wavelengths and restrictions of the colored plastics.SMD LEDs are the future of LEDs... they burn brighter, last longer, and run cooler. If you are thinking about trying LEDs, just be aware that you will need to install a solid-state flasher to prevent "hyper-flash" on your turn signals, and if your bike/car/truck has a load sensor to trigger a dash light that you have a "burned out bulb"... installing LEDs will trigger that warning light. On a bike... the solution is easy... just pull the warning lamp :) On a car/truck, you may want to invest in a 25-50 Ohm resistor pack (load balancer) to trick the warning light into thinking the bulb is an incandescent. The drawback to load balancers, are they get hot, and waste as much energy (or more) than the original incandescent bulb... so you gain brightness, but loose power availability, which is critical on a motorcycle.

I purchased these November 0f 2014 and now it's September 2016. I installed them on a small trailer , today I checked the lights and the brake side is working fine but the parking light quit on the right and left side. I have no idea how long it's been this way. I assumed these would last a lifetime. Wrong assumption.

The quality is in the medium range. They do light up and look nice on the "tail" light mode but the biggest thing you are going to notice is that there is not much difference in the brightness when the "brake" light mode is activated. The LED bulb is not as bright as the regular incandesant bulb it replaces. This can be of some concern regarding safety. Another thing that should be mentioned is that there is a "lip" around the top of the metal base that may interfere with some of the deeper base sockets, such as what is on the Chevrolet S10. The LED may not be able to seat properly.

Works well, BUT, IMO there isn't enough difference in brightness between the "dim" and "bright" modes. I am putting them into a set of magnetic tow lights, so I'll just put a resistor on the "dim" side but I wouldn't get them tor a car without doing that.Either the "dim" or the "bright" would be great on its own, but not so much together.