Top critical review
78 people found this helpful
Certainly do the job, but quality matches the bargain price
on April 1, 2012
If you're looking for an inexpensive LED bulb to work as an adequate replacement for an incandescent, these will certainly fit the bill.
Some things to consider about these:
The surface mount LEDs leave exposed energized surfaces. In most bulb installations, this isn't an issue, but if in your application the bulb may come into contact with a conducting surface, in particular a grounded conductive surface, this could damage the bulb.
The wedge base of 168 and 194 bulbs, by nature are not mechanically polarized, which means you can insert them into the socket in two orientations. LEDs, by their nature are electrically polarized. The base of these bulbs do not have a rectifier in them. What this means is that while you can put the bulb into the socket two ways, it will only work in one of the ways. Again this is not a big issue, but something to be aware of during installation as you'll want to functionally test the bulb before closing it up back into its lens. Note that some of the higher quality (and more expensive) LED bulbs will work in both orientations.
The LEDs used appear not to be graded for color temperature, therefore a bulb may have one or more elements that appear yellowish white light, some that are greenish white light, some with bluish white light, and some purplish white light. If matching the "tint" of your white light between bulbs, or even from a single bulb is important, stick with a higher quality bulb. If having a little variation between bulbs doesn't bother you, or you're willing to experiment to find a close enough matching set, then they probably will work for your needs.
Intensity is satisfactory. They work great for license plate lights. They may be okay for a dome light (though most of those use festoon bulbs nowadays). If you're relamping parking/clearance lights, be sure to use a bulb that produces the correct color light for best results (in other words, DON'T use these).
Longevity. LEDs generally should last much longer than a filament bulb, both in service life and durability and it wouldn't be unreasonable to expect that you shouldn't have to ever replace an LED bulb for the lifetime of the vehicle. It comes down to the quality of the bulb base construction and attachment of the LEDs themselves, mechanically speaking. Electrically, these probably have nothing more than a current-limiting resistor, so they are potentially susceptible to damage from large voltage spikes. So, the more mechanical vibration and the "dirtier" the supplied electrical power, the higher likelihood of a failure.
UPDATE (22Nov-2013): With several of these bulbs installed in a vehicle that sees almost daily use, I have not experienced a failure. While anecdotal and unscientific, after 18 months of service, some might consider it a useful point of consideration.
If you insist on a well designed, well built, high quality product, these probably aren't for you. But, given the price, you don't have much to lose if all that you're looking for is a simple white LED bulb.