I was hoping that the LED Bulb I ordered would replace the incandescent model that failed in the Cessna landing gear down position but it did not work. The LED felt a tad bit looser than the one I replaced. I may have ordered the wrong bulb. Darn!
Mike C
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
July 6, 2024
Quick easy swap to convert incandescent lamps to LED version.
Larry M
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
March 27, 2024
One was non functional!
C. L
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
September 11, 2023
not bright enough and in the wrong direction, light was straight out on down
Leonard H
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
July 18, 2023
Great product. Super bright and drop in replacement
Dreamcraft A
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
April 7, 2023
Used these for Cessna Panel lighting. Most worked very well immediately, a couple seemed to take a couple of flights to stop flickering (I ordered spares but the original ones stopped flickering). White light instead of orange glow
Charles B
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
April 4, 2023
Works great
Genavco A
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
February 23, 2023
Worked great in my PA28R for landing gear indicator lights
Martin S
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
January 31, 2023
Very effective bulbs - easy to swap in for standard bulbs and never doubt ‘3 greens’ again - easily visible in direct sunlight or with panel dimmed.
Dr D
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
November 19, 2022
Ordered 20 of these lights and they worked great in the Cessna Caravan 208 & 208B. Hoping they last longer than the 327 bulbs. If they do, well replace all the 327 bulbs in our fleet.
Southern A
November 15, 2022
Great replacement bulbs for Piper Arrow II landing gear indicator lights.
Richard T
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
January 25, 2022
I bought 10 of these several years ago to put into the buttons of our Continental 816R and QEI FMQ 10,000 transmitters. They remain bright and steady all these years later. The bipolar nature and wide voltage range allows these bulbs to operate well no matter what socket I put them into on these transmitters. The transmitter manufacturers basically told me I was SOL when it came to replacement lights, but Spruce had these and Im buying more now to try in our Wheatstone Audio Arts R-60 consoles. Im hopeful at the 5 Volt level, the light will be as nice as the original LED lights the console came with 25 years ago. For 30 Volt use, though, I think this is the ONLY choice for your T1 3/4 replacement. And the price is one of the best on the internet for any LED bulb of the miniature variety. There might be rare cases where these bulbs wont work, but Ive had them work fine in AC or DC sockets from 24 Volts to 28 Volts. They stay bright and steady and dont flicker or do unpredictable things in push button actuator switches on these transmitters. The old incandescent ones were always flickering or burning out within a couple of months. These are well worth the try.
Marvin
January 19, 2022
Marc-antoine G
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
September 22, 2021
These are an excellent replacement for the original bulbs. They are very bright and low energy draw. Makes it easy to see gear position during the day.
Sean D
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
September 7, 2021
Works great and draws very little power and nice brightness.
Jay S
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
June 22, 2021
Works well and a fast, well packaged delivery.
Jay S
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
June 9, 2021
Excellent product!
Karl-heinz Z
November 28, 2020
They are bright and easy to see Them during bright sun light.
Mauricio F
June 13, 2020
Excellent product. Exactly what I needed, where I needed it, superb shipping and reasonable price.
Clifford W
May 14, 2020
Very Good. Just as I ordered.
Ronald B
April 10, 2020
These LED lights are brighter than the incandescent bulbs they replaced. In my case, I have bulb cases with adjustable eyes, so I’m not worried about it. You can see these LEDs better in daylight. The incandescent bulbs got very hot, but the LED lights are cool. The LEDs should last much longer than the incandescent bulbs.
Steve M
September 20, 2018
The reason these lamps will not work in a compass is because a compass light fixture is wired backwards than a normal fixture. This is due to the way the lamp is inserted in the fixture. The positive post in a compass fixture is inside away from the frame, and touches the outside circumference of the lamp (normally the ground). The ground is the cover over the lamp, which touches the center lamp electrode. If it was wired conventionally, you would touch the case and get a shock. LEDs are polarity sensitive.
Dave
July 27, 2018
This was the only site I found that carried an LED lamp of this shape that was described as being a bi-polar lamp. The new lamps fit well and have worked in all our applications on broadcast equipment panels.
Skip R
June 4, 2018
These bulbs are an excellent replacement for the GE 330, but be aware that they will probably overwhelm green or amber lenses. All I can see thru my amber warning light is a bright white. I dont usually fly at night so this is fine. My amber warning lights are not the dimmable kind. I have a dimmable red lens warning light, and the red shows ok and the bulb seem to dim.
Gary G
April 16, 2016
Work great in Continental 616R series FM transmitters as direct replacement for the incandescent midget lamps in the filament on/off and plate on/off buttons. They are super bright, so only one bulb per button is needed, even though the button frame will accommodate four per button.
These also work great for the panel lights in a QEI FMQ 10,000 transmitter!
Super versatile, super bright, super cool and the price is super right.
Marvin
April 28, 2015
Plenty bright as a 327 replacement in a 28 volt system. Doesn't appear to generate as much heat as the original incandescent lamp.
Philip B
September 14, 2013
worked well in my Comanche gear lites
Charles F
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
December 19, 2023
Used as a replacement for GE-330 12V landing gear indicator lamps. Brighter than the incandescent lamps, not sure if they can be dimmed or not, mine stay full bright.
Ned
December 22, 2017
Much brighter in my original landing gear down indication bulbs. Now I can see the lights even when the sun is shining on it.
Bt
March 16, 2014
Look great but these did not work for me. I think the size is slightly off
Moon S
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
October 30, 2021
Ordered 6 bulbs, 5 of 6 worked, one did not.
Kirkland A
August 12, 2020
These work as a replacement for GE327 but beware: they DO NOT DIM. In my panel the 3 gear lights are actually too bright at night.
Jim M
August 9, 2018
Ordered to replace the landing light bulbs in my piper. They fit in the lenses, and look like they are making contact, but wont light up. I assume the polarity must be backwards, but I also assumed thats what Bi-polar and any polarity meant. Maybe bi-polar refers to them sometimes working and sometimes not. They work fine in the warning lights, so I suppose thats where theyll get used someday. I didnt find them to be any brighter than the incandescent bulbs either, which was also disappointing.
Jim K
March 30, 2021
Great specs, but 2 out of 3 did not operate when powered up, have to be reordered
Keith D
February 29, 2020
The bulb works as described when powered up on the bench however this bulb does not fit in my compass. The shape of the plastic LED stops it from being inserted far enough into the compass to close the cover (tip contact).
Mike G
November 10, 2018
I just received my replacement bulbs from my initial shipment as 20 units were damaged at at the base of the bulb due to, (in my opinion), poor construction methods. Although these bulbs functioned fine, (except one), most were damaged at the base, (torn metal), or the Mica separator was protruding out so far that the assembly would not close once the bulb was installed in the holder. Just received my 20 replacement bulbs and, although they are slightly better, some bulbs still displayed poor quality control issues and I ended up picking out the best of the best and sending back a combination of the initial shipment and the new shipment. If you compare these bulbs with the Sloan LED product, there is no comparison as the Sloan product is perfectly constructed with zero flaws. I ordered 100 of these bulbs as well and could not find manufacturing flaws except that the Sloan LED product is not bi-polar and therefore could not be used in my application. I really like this product and find disappointment that, for the price per bulb, there should be a higher manufacturing standard.
James M
February 9, 2018
Although I love the idea of these replacement bulbs. I find that the quality control is somewhat lacking. I found a number of these bulbs either damaged at the base, or the Mica electrical separator protruding out so far that my lamp holder would not close properly, or pushed too far in where it would create a short in my application. When considering the cost per unit, these bulbs should be in top quality condition. I have also bought the Sloan LED model and found there build to be far superior, however they are not bipolar and could not be used in my application. I will add that Aircraft Spruce has the best customer service I have seen as they have satisfied my every need in replacing these bulbs. This company is a good example that customer service trumps quality control as I will order from them again in the future.
James M
January 25, 2018
Do not buy these flimsy type lamps! Some of them are 24 volts and do not work with 14v
Be aware!!!
Marcos S
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
January 17, 2024
I should have listened to the reviews on Piper Owner Society about these bulbs. They are totally hit or miss. I bought 6 and only 3 worked. Their quality control or something is just not right. On recommendation from the Piper group, I bought some Aero-Lites LEDs, and they work great. They fit much more snugly into the lens, and they are super bright.
Anthony J
October 5, 2022
Bought these since the description says they are bi-polar. They are not. Bought some others from Aero-lites that are bipolar and work properly in a push to test light.
Bob J
Verified Purchase
Bi-Polar Mini LED Repl T1-3/4
November 9, 2021
I bought these as they are described as Bi-Polar, will operate AC or DC, any polarity, 5-28V.
They do not work with reversed polarity. Much brighter than incandescents.
Bob J
November 2, 2021
Very disappointed with these bulbs. I ordered 3 over that last 6 months and not one worked. Would not work in the airplane or on test equipment when hooked up directly to as 9v battery or 12v power supply. Dont waste your money on these.
Ron
January 18, 2021
Bought three to replace 327 bulbs.. all three arrived DOA. Definitely quality control issues.
Andrew H
December 27, 2020
Its an LED. Unfortunately the flange is larger in diameter than the equivalent GE incandescent and some of the other LED replacements on the market. It didnt work in my application because the bulb holder is a close tolerance fit. The main section fits into the screw in lens just fine, but the wider flange wouldnt fit into the threaded socket. I carefully polished the flange down on a scotchbright wheel and got it to fit but it still intermittently shorted out the socket internally. I used a different bulb and threw these away. If the flange is a close fit in your socket this is not the LED bulb for you.
Geoffrey M
November 13, 2020
I purchased four of these and two burned out within a month. The bulbs that these replace last longer than that. These are too expensive to burn out so quickly.
Mark H
October 17, 2018
Tried to use them in the compass. Bought 2 with the intent of one as a spare, however, tried them both and neither would come on. Checked them with a battery and still will not work. Not very happy with the outcome.
Richard
March 10, 2017
Polarity does matter with these. 3 out of 3 did not work in my aircraft. Checked on a battery, they work fine.
Shillings A
October 18, 2021
These did not work in my 24v MU-2
J.p.
October 27, 2020
6 out of 6 of them did not work. Had to return them.
Lohmar &
September 3, 2020