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Indicator lamps, also known as pilot lights, come in use on virtually every type of electrical or electronic equipment you can imagine. The majority of new appliances use light-emitting diodes (LEDs), excluding AC power displays or indicator lights, for which neon bulbs remain favored. LED prices have come down significantly in the last few years; LEDs have a typical lifetime average of 100,000 hours (over 11 years of steady use); they are highly resistant to shock and vibration; LEDs operate cool; there are many other benefits. Not surprisingly, LEDs are becoming so extremely popular. Glowing indicators are not often found on new devices but have been quite widespread so far in the past.

Incandescent bulb replacement with longer service life

The working voltage has a big impact on the lifetime of the incandescent lamp. For a rough understanding of the connection, refer to the table “Approximate effect of incandescent lamp voltage on light output and life”. Indeed, the dynamic range of the human eye allows a certain decrease in light output to be accepted or hardly noticed if, in return, the life of the incandescent lamp is increased significantly by selecting a lamp with a higher voltage. Actually, the longer-lasting 12-volt lamps that are often used are in fact 14-volt lamps. Understanding the operating voltage/lamp wattage/lifetime relationship will enable you to pick a lamp that will deliver adequate light levels for the job, yet may last significantly longer than the “standard” bulb supplied with the fixture.

Approximate Effect of Incandescent Lamp Voltage от Light Output and Bulb Life

Percent of Rated Operating VoltagePercent of Rated Light OutputPercent of Rated Bulb Life
120% Overvoltage200%7%
110% Overvoltage140%30%
105% Overvoltage120%55%
100% Overvoltage100%100%
95% Overvoltage85%200%
90% Overvoltage70%500%
80% Overvoltage50%2 000%

A few approved incandescent bulb substitute options

There are some remarkable and readily available incandescent bulb substitutes that deserve to be mentioned. For 12-volt uses, the commonly available 1815 miniature bayonet bulb that has a nominal lifetime of 3,000 hours can normally be substituted for the 1893 bulb which has a nominal lifetime of 7,500 hours. For 24-volt applications, the 1819 miniature bayonet lamp having a rated service life of 2,500 hours can normally be substituted with the 757 lamp which has a nominal life of 15,000 hours. Both of the substitute lamps mentioned above are uncommon in the sense that the longer-life lamps (1893 and 757) indeed generate greater light than the lamps they are substituting for, but they also use somewhat more electricity to do so.

For 6-volt applications, the usual 47 miniature bayonet lamp with a nominal lifetime of 3,000 hours can normally be substituted for the 755 lamps with a nominal lifetime of an amazing 20,000 hours. For 24-volt applications, the 327 miniature bayonet lamp with a nominal life of 4,000 hours can usually be substituted for the 376 lamp which has an outstanding service life of 25,000 hours, or if a decrease in light output can be tolerated, the 385 lamp which has an unbelievable lifetime of 50,000 hours can be used.

For automotive turn signal and marking purposes, the 168 and 194 wedge base lamps with a nominal life of 1,500 and 2,500 hours, can usually be replaced with the 193 with a rated service life of 5,000 hours.

168 car led bulb

168 car led bulb

Choose the best led lamp

Top choice

AUXITO 194 LED Light Bulb

AUXITO 194 LED Light Bulb

  • 4,8 Rating
  • Voltage 12V.
  • Fit Bulb Sizes: 168, 175, 194, 2825, W5W, T10.

Best choice

Marsauto 194 LED Light Bulb

Marsauto 194 LED Light Bulb

  • 4, 9 Rating
  • Lumen: 300 LM
  • Fit bulb size: T10, 147, 152, 158, 159, 161, 168, 175, 184, 192, 193, 194 2825 W5W, 194.




  • 4,7 Rating
  • 6000K.
  • Fit Bulb Sizes: T10, 147, 152, 158, 159, 161, 168, 175, 184, 192, 193, 194 2825 W5W.

Buying Guide: Top 168/194 LED Lamps

  • Lumen

Lumen is a concept that indicates the light’s brightness. Therefore, the greater the lumen rating, the brighter the light is going to be. Lumens do not tell you how white the light is going to be; they just say how bright the light will be.

  • Output

Get a light bulb that will last a long time and function properly for extended periods of time. The packaging of the bulb usually shows the number of hours it will work. Therefore, it is recommended to get a bulb with a life span between ten thousand and thirty thousand hours.

  • Multipurpose

The light bulb can transform the car interior. Actually, it could do it more fashionable. The LED light bulbs you purchase need to be multi-purpose. They are supposed to work as lights for several areas like the trunk, dome, map, license plate. As most of the bulbs are supplied in packs of ten, so you can put them to use in various places by getting a set.

  • Mounting

Most of the LED bulbs are delivered with no indication of the polarity. It is easy to mount plug-and-play bulbs into a PCB, therefore, you need to search just for plug-and-play bulbs every time.

  • Service life expectations

The majority of LED light bulbs offer a life span of approximately 30,000 to 50,000 hours. You need to search for the most durable LED bulbs available for your car.

Which is the brightest 168 vs 194 led bulb

The 168 bulb is brighter as its wattage is higher than the 194 bulbs. Both of these would be the same exact size. Indeed, you might find all the aftermarket bulbs on websites show 194/168 wedge or a related kind. Thus far as which LED light bulb qualifies as the finest? Apologies, there is frankly no such thing as a final answer. You have to consider the brightness and angle of a certain led to study, and then determine what bulb you want to get.

How many watts is a 168 bulb vs a 194?

168 is a 4.9-watt incandescent bulb. 194 is a 3.8-watt incandescent bulb. Similarly, when people ask what is the difference between 161 and 194 bulbs?
Yes, the only difference between them is the wattage. However, it’s only a few watts, about 2 or 3 watts. Most of the hyper white bulbs are 194s.
So what is the difference between the 193 and 194 bulbs? While the 194 can last up to 15,000 hours of operation, it is 1.06 inches long and 0.56 inches in diameter, the amperage is lower than the 193 at 0.27 amps, while the voltage is 14 volts and the bulb itself is a T3. 25 bulbs. Compared to 193, it uses less wattage, 3.8 watts.

So what is the difference between 194 and 168 bulbs?

The 168 bulb is a brighter bulb because it has a higher wattage than the 194. They are both exactly the same size. In fact, you will find that all aftermarket bulbs on online stores indicate 194/168 wedge or a somewhat similar type.

Are 194 and 168 bulbs the same?

They are exactly the same size and can be used interchangeably. The difference is that the 168 is brighter than the 194. Although brighter, the 168 does not last as long (1500 hours) as the 194 2500 hours. The 168 has 3 candle power versus the 194 with 2. Since the 168 is a little brighter, it produces a little more heat (3.8 versus 4.9 watts). In most situations where 194s are specified, use an exact replacement to avoid heat damage from the hotter 168 bulbs.

What is a 194 bulb used for?

These lamps are suitable for various automotive applications, such as parking lights, turn signals, brake lights, reversing lights, and interior lighting.

How many watts does a 194 bulb use

194 LED Bulbs Extremely Super Bright

What precisely is the distinction between t10, w5w, and also 194

A t10 led car light bulb invariably comes up with other types, like w5w or 194. Precisely just what is the difference between w5w likewise 194? Does it signify it is in various sockets or in the various watts?

W5W implies a bulb of up to 5 watts. The 168 is a 4.9-watt bulb. The 194 is a 3.8-watt bulb. These are normal incandescent bulbs; they are not LEDs. The LED bulb pulls a lot less power in comparison to the 168 and 194 bulbs, and they are usually replaceable.

LED bulbs are available in various kinds in relation to placement, focus, current draw, and more. These also have polarity distinction, meaning they function only when they’re used correctly, meaning you may have to adjust them to 180 levels. In addition, the amount of heat versus light (illumination) generated and the color of the light will surely be significantly distinct from halogen or incandescent bulbs.

When installing a t10 LED light bulb, it is constantly an incandescent bulb usually used for permission light and indoor light. As the time takes place, w5w and also 194 both are able to signify a t10 light bulb, it is just a different descriptive name of t10 light bulb.

Are you aware of what a T10 light bulb is? In fact, it’s the most frequent light bulb on every auto or lorry out on the road nowadays. The issue with upgrading to LED is that for almost all people, there is no idea what to use. You have a 194, a 168, T10, T15, 912, 921 – all of these different bulb models that go in your glove box, your cupboard lights, your map lights, your door lights, your trunk lights, and your backup lights, and your license plate lights. However, LED light bulbs are able to substitute for all of them.

The wattage matters

T10s are available in 194, 168, W5W, 147, 152, 158, 159, 161, 168, 194, 192, 193 – and they are all essentially the same in appearance. Actually, all of them feature the same socket, they all are constructed identically using the same filament – and the only distinction is the wattage. Based on the number of the bulb; 194 versus 168, everything it is doing is telling the amount of wattage the bulb draws. So the more watts the bulb draws, the brighter it is.

Therefore, a manufacturer would be able to use a truly low wattage bulb in a glove box. You do not want to have a lot of heat coming off next to anything you store in the glove box. If you use an LED bulb, you won’t need to be concerned about that since it won’t become as hot.

Therefore, if we consider an LED light bulb – you can notice that the sockets are fundamentally the same. They are made of different materials, plastic and metal rather than glass and wire, yet they match in the same spot. So we can pick up an LED bulb, take out one of the multiple part numbers of T10 – 194, 168, and so forth – and it will simply function. The T10 LED bulb is not available in various wattages as the incandescent bulb is, so it just comes with a one-part number.


Ensuring that you get the best brightest light bulbs available really pays off for a lot of people. By making the proper investment, instead of just going with whatever is available at your local store, you can make all the distinction in just about any light bulb that you need to replace. Choose wisely, and you can avoid replacing them for a long time and open up new avenues of vision with your lights.

How to Install194 bulb - Video

FAQ: Best 194 LED Light Bulbs

What is the benefit of switching to 194 LED light bulbs?

194 LED light bulbs are very simple to use and provide maximal brightness in that capacity. You can change from a halogen bulb, and it’s great for the ecology too. The 194 bulbs will last a long time, so this is great for you since you don’t have to replace them on a routine basis. The 194 LED light bulb also has a quick reaction time, it will light up instantly, and this will be helpful in preventing accidents. Quick response time appears to be a small demand, yet it is an essential consideration while driving on highways. Also, LED lamps to release less heat than halogen lamps, and this is an extra bonus of LED lamps.

How many lumens does a 194 bulb have?

Lumens refer to the light output power. Lumens measure the quantity of visible light from the bulb. Therefore, the greater the lumen rating, the brighter the light. 194s are 25 lumens, making it a decent light output. It will give a superior lighting performance in the car.

How to install 194 LED license plate lights?

Changing your current LED license plate lights with 194 LED lights is quite easy. Just take these instructions:

  • Take off the casing of your LED light located above the license plate using a screwdriver, or just wiggle it out using your fingers provided there is plenty of space
  • On both sides of the housing, you’ll notice clips keeping the cover on. Just push on the clips and slide out the cover of the light fitting
  • In order to take out the actual LED bulb, you just have to pull it out.
  • Change the bulb with your new one by pressing it in.
  • Lastly, try out the new bulb by running your car light.
  • Place the cap back on the light and push the case back into place.

So what's the distinction between 168 and 194 light bulbs?

  • The 168 uses three candle power, whereas 194 uses two candle power
  • 168 bulbs come in handy for alert applications (stoplights), while 194 bulbs can be used for steady light (e.g. for your registration plate)
  • 168 bulbs have a life of 1500 hours, whereas 194 bulbs have a life of 2500 hours.
  • 168s tend to be three-watt bulbs, whereas 194s are five-watt bulbs.
  • 194s are more durable than 168s.
David Muench (Carnes Mechanical)

David Muench (Carnes Mechanical)

Hey, I’m David. I’ve worked in a cars store for 6 years. I write reviews and guides, helping people to choose the most suitable technicals and best product for them. I’m happy to finally share my knowledge of the industry here, on CarnesMechanical.

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