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Old 12-08-2023, 12:24 PM #1
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Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Disclaimer: I received the bulbs for free but am not paid. I hope this provides value to some of the forum members who are seeking a solution

After several months of shopping, researching, and calling dealerships, I purchased a 2022 Toyota 4Runner SR5 Premium from my local dealership. Since then, I’ve been on a mission to replace the dated halogen bulbs with LEDs. The vehicle came with wonderful OEM LED headlights which in comparison, made the halogens look out of place and mismatched. I wanted the cleaner and brighter light that LEDs could offer. I struggled with the decision to replace the OEM halogen bulbs on my turn signals as I have heard about issues that arise due to the design of the circuit and the possible negative interaction with the relay causing what many people know as hyperflashing. This is what most of the product offerings on the market unfortunately result in. The fix is to cut the wiring harness and add an inline resistor. There was no chance I was going to do this with a new vehicle. Having had a long history of modifying vehicles and making mistakes, I learned that cutting the wiring harness was the first step to reduced reliability and it increases the possibility of electrical issues down the road. The bulbs must fit in the OEM socket and headlight fixture with no modification to the housing. Last but certainly not least, the longevity must be better than an OEM halogen. Although LEDs last longer than halogens in controlled testing environments, anyone who has done some experimenting with cheap LED chipsets knows that the connections on the printed circuits are more likely to cause failure than the degradation of the diode. After expressing my expectations and needs to the customer service department at Lasfit, their employee, Hank, assured me that they had a new product that mitigated these risks and performed above expectations. Hank was very helpful, knowledgeable, and understood my requirements. The recommendations were for the T3 series 7443 bulbs, amber for the rear and switchback amber/white for the front. (SKU#: T3-7443A and T3-7443D).

I ordered the recommended bulbs for the front and rear on a Tuesday. They shipped on Wednesday, and I received them on Monday, a couple days earlier than I was expecting them to arrive. One business day for order processing and three business days to ship from Southern California to Pittsburgh via USPS. This is a great turnaround for fulfillment and delivery cycle times for consumer goods in the e-commerce industry. The package itself was delivered intact and was contained in a nice, branded bubble wrap mailer. I like seeing companies that promote their brand through leveraging their digital assets, smart and easy marketing.
Upon opening the package, I noticed the bulbs were in good condition and there were no signs of damage during shipping. The bulb SKUs matched what I had ordered which is something I always check. The bulbs themselves have a good weight to the touch and show good initial quality based on appearance. The newer model has a white cap on top, whereas the older version has a gold-colored crown.

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Installation Directions

Tools Required: 10mm Deep Socket and Rachet; Trim Removal Tools, Bulb Grease, String
Front Turn Signals:
1. Turn Wheel completely to lock to allow for room to work.
2. Remove 4 10mm bolts that secure the bottom of the fender liner. There will be 3 on the wheel arch and 1 on the bottom of the fender. Depending on the modifications and your experience, you may need to remove more bolts to get the fender liner to release. Remember the order the bolts are removed. There are a few different types of fasteners used.
3. Using the trim tools, pry the fender liner out from the fender and secure it back with a small bungee cord or string.
4. Remove the turn signal socket by rotating it left then pulling straight back out of the headlight housing. You will have to reach way up into the fender well to get access to this bulb.
5. Remove the OEM bulb from the socket by pulling it straight out. This is a friction fit bulb and does not require any other method to remove it.
6. Apply a small amount of bulb grease to the electrical connections on the new bulbs.
7. Press the new bulb into the socket.
8. Turn on the hazard lights and test for polarity. If it lights up, then it passes. If it does not light up, turn off the hazard lights, remove the LED bulb, rotate 180 degrees, and reinstall. Then turn on the hazard lights and retest for polarity.
9. Once the new LED bulb is operational, grasp the socket and reinsert into the headlight housing then turn the socket right until it is fully seated.
10. Reinstall and align the fender liner as it was before removal.
11. Reinstall 4 10mm bolts.
12. Repeat for opposite side.

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Rear Turn Signals:
1. Open the rear hatch and locate the access panel directly behind the taillight.
2. Using the trim tools, pry the access panel off.
3. Remove all three of the sockets and/or electrical connectors that attach to the taillight.
4. Remove 2 10mm bolts holding the taillight to the body.
5. Using the trim tool, pop the headlight from the friction fit guides and remove from body.
6. Remove the turn signal bulb from the socket by pulling straight back. This is a friction fit bulb and does not require any other method to remove it.
7. Apply a small amount of bulb grease to the electrical connections on the new bulbs.
8. Press the new bulb into the socket.
9. Turn on the hazard lights and test for polarity. If it lights up, then it passes. If it does not light up, turn off the hazard lights, remove the LED bulb, rotate 180 degrees, and reinstall. Then turn on the hazard lights and retest for polarity.
10. Once the new LED bulb is operational, reinstall the taillight by aligning the fit guides and pressing the headlight into the body until it pops into place. It should be snug.
11. Reinstall 2 10mm bolts. Reinstall 3 of the sockets and/or electrical connectors.
12. Reinstall access panel by aligning it then pressing it into place.
13. Repeat for opposite side.
Note: Some vehicles will have enough slack in the wiring harness to do the bulb change without removing the taillight. Overstretching the harness should be avoided so the safest route is to remove the taillight and insert the new bulb with socket then reinstall the taillight.

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Before Photos:

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

After Photos:

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Lasfit Turn Signal LED Bulbs - Review/Install & Before/After

Comparison and Conclusion:
The whole installation process for front and rear took me about 40 minutes to do all 4 bulbs. It was straight forward and I ran into no problems during the install. I worked in a deliberate and careful manner. Your experience may vary depending on skill level and speed.
The bulbs required no resistors or cutting of the harness. Even though they are significantly longer than the OEM halogen bulbs, they fit into the socket and housing with no troubles. Both of these points make for a simplified and straightforward installation process. In addition, there were no error codes shown by the CANBUS protocol when I plugged in my OBD2 reader.
After installing the Lasfit 7443 LED bulbs, my first impressions were positive. They projected more light than the OEM Halogens. The front side marker light gave a solid light pattern with no flickering that matched my OEM LED headlights and LED DRL conversion perfectly. Now all three of my headlight based forward lights match which is excellent. I would assume all three are 5000k color temperature or close to it. The front turn signal lights have 20 LED chipsets that are divided as 4 in white and 16 in amber. When the turn signal or hazard lights are activated, the remaining 16 amber LED chipsets light up. This produces a very bright turn signal. The rear turn signals are 20 LED chipsets that are all amber in color. The rear turn signal was exceptionally bright. I can easily see both the front and rear turn signal lights on the ground from inside the vehicle. This was not the case with the OEM halogens. When comparing the light output, the OEM halogen bulbs are usually between 400-440 lumens and the upgraded LASFIT 7443 LED bulbs are 2000 lumens. This is a significant improvement by any measure.
After the initial impression, I tested the lights by turning on all exterior lighting options and activating the hazards to test for heat soak induced hyperflash. After about 10 minutes of run time, I could tell the system in place was modifying the frequency timing to maintain an even light duration. This was a strong positive to see the systems designed to prevent hyperflash working in real time.
After two weeks of standard usage, I am pleased to say that every aspect has worked flawlessly. I would not hesitate to recommend this product to any enthusiast that desires to upgrade their OEM lighting to LED. I am satisfied by the quality of the product, the ease of installation, and the excellent service during my purchase. This is a quality product that has exceeded my expectations.

Links below:
Front Switchback
7443 7444 Switchback CanBus LED Bulbs Front Turn Signal Lights | Error
Rear Amber
7443 7440 7444 7442 Amber CanBus LED Bulbs Turn Signal Light | Error F
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Old 12-08-2023, 02:12 PM #2
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Excellent write-up! I also notice Lasfit is offering 15% off...I'm teetering on the edge of placing an order...
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Old 12-08-2023, 02:40 PM #3
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Had a very different experience with Lasfit and their bulbs. Installed the front and rear turn signal bulbs to avoid hyper flashing. Turned the hazards on and writhing 60 seconds one side was hyper flashing already. Once the built in resistor cooled down a bit, it stopped hyper flashing and then the other side started hyper flashing. Pulled them all out and went back to halogen. A larger resistor may be an option, but a better option is a flasher relay that is built for LEDs
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Old 12-08-2023, 02:53 PM #4
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Quote:
Originally Posted by NB17Limited View Post
Had a very different experience with Lasfit and their bulbs. Installed the front and rear turn signal bulbs to avoid hyper flashing. Turned the hazards on and writhing 60 seconds one side was hyper flashing already. Once the built in resistor cooled down a bit, it stopped hyper flashing and then the other side started hyper flashing. Pulled them all out and went back to halogen. A larger resistor may be an option, but a better option is a flasher relay that is built for LEDs
In the past, I've experimented with LED turn signals on a number of different vehicles, all of which provided the same experience that you had, hyperflashing. My understanding is this is the 3rd or 4th version they've worked on to remedy the current surge that is common with reduced resistance. You may have had an older model without the improvements as these are a fairly recent release.

Quote:
Originally Posted by Connor MacLeod View Post
Excellent write-up! I also notice Lasfit is offering 15% off...I'm teetering on the edge of placing an order...
Thanks!
I'm about three weeks into the install and am very satisfied so far. If you do end up buying them, I'd be curious to see if you have the same results.
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Old 12-11-2023, 12:11 AM #5
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Quote:
Originally Posted by NB17Limited View Post
Had a very different experience with Lasfit and their bulbs. Installed the front and rear turn signal bulbs to avoid hyper flashing. Turned the hazards on and writhing 60 seconds one side was hyper flashing already. Once the built in resistor cooled down a bit, it stopped hyper flashing and then the other side started hyper flashing. Pulled them all out and went back to halogen. A larger resistor may be an option, but a better option is a flasher relay that is built for LEDs
I have a '23 Limited and used the Lasfit T3 series 7443 7440 7444 7442 Amber CanBus LED Bulbs Upgraded Version bulbs for both front and rear and have had no hyperflash at all after a month of use. I turned on the parking lights and four way flashers for over 5 minutes and no hyperflash.
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Old 12-11-2023, 01:09 AM #6
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Curious how the front switchback looks like at night against a wall? Would hate to drive around with parking lights blinding everyone.
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Old 12-19-2023, 03:15 PM #7
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I have been using the previous version of the Lasfit LED front and back turn signal bulbs for over 4 years and Iíve been pretty happy with them. They are very bright and really get other driverís attention. They work well in normal usage but I could get them to hyperflash when running the emergency flashers continuously for 5 minutes.

When I heard about the upgraded T3 versions I ordered a set. They have a slightly different profile which is shorter and easier to install in the rear positions. There are more cooling vents. And less LED chips on each face of the bulb. Apparently the electronic design is improved since I am able to run the emergency flashers for over 30 minutes with no hyperflash problem.

And they are the switchback style with bright white LED chips illuminated with headlights or parking lights on. Then bright amber flashers. Iím pleased with the results and if their track record is like my previous experience they should last for many years.
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Old 12-20-2023, 01:19 AM #8
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Quote:
Originally Posted by Enikad View Post
Curious how the front switchback looks like at night against a wall? Would hate to drive around with parking lights blinding everyone.
Hereís a head-on shot with parking lights on. New white switchback vs old Lasfit amber.
Parking lights are not as bright as low beams.
(Plus, in many states youíre not supposed to drive with parking lights on).
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Old 12-20-2023, 04:45 AM #9
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Quote:
Originally Posted by Enikad View Post
Curious how the front switchback looks like at night against a wall? Would hate to drive around with parking lights blinding everyone.
Lasfit switchbacks are extremely bright when you compare them to other vehicles's amber turn signals, but they are no way blinding or distracting. They are bright enough to cast a amber hue on everything.

My old set is still running fine in my buddy's vehicle for the last 6 years or so, and still as bright as when i first got them.
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Last edited by mrblah; 12-20-2023 at 04:59 AM.
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