(Date 8/2/2021) I identified a clarification that needs added to the below review that I submitted originally.First to summarize:These lights will work in a flashing application if the power source provides a smooth DC current. (For example, the vehicle's regular DC power system.) These lights will not work in a flashing application if the power source provides a pulsed DC current. (For example, an unfiltered bridge rectifier.)The battery that I had installed originally was weak and on a battery charger that was charging the battery at the time that I had tested the lights out in the vehicle. The charger I have puts out a non filtered DC current and is "choppy." Apparently these lights don't like that when being switched repeatedly in a short time period.I discovered, (a year later in a "well it's better than nothing" situation), when I needed to replace one of the turn signal lights and had only one of these to replace it with that it worked just fine. That is when I realized that on clean battery power the lights will switch on and off without any problems. I have been using the lights now in a turn signal application for a year and they are working fine so far.I left the below review as it was written originally because I see that some people have marked this review as "Helpful." To add clarification to the below review since it is not necessarily false, it is only in a specific case: The lights have to be powered from a "smooth" DC source to work in a flashing type application.(Date: 3/2/2019) This review is based on using the lights in a turn signal application only.The LED lights are as advertised. They are bright and they are not polarity sensitive. You can connect them in both positive to center and common to the outer case, or positive to the outer case and common to center and it does light up.I used these to replace turn signals bulbs that use these style base. The led will light with the first pulse, but then will not fully light as the turn signal continues to run. They flicker dimly and inconsistently with each pulse. They will eventually not light at all. They have a minimum time powered off before they will light again and the turn signal pulse frequency is shorter than that time.If you connect the LED to a steady power source and turn the power on and don't pulse it, the light comes on instantly and stays lit. It does this in both polarity configurations. If you turn it on and off, you have to pulse at longer than 2 second intervals to get the light to come on and stay on each time. This is also true for both polarity configurations. Unfortunately turn signal controllers pulse at around once per second or a little faster.Overall impression of the LED as a a light: It is bright and white. It will work well for an application that does not require turning on and off on a short period. I don't know if the product will have a long life, but the construction appears to be good.Overall impression of the LED as a turn signal or flasher: Non functional.

Nice bulbs & really bright for my 1965 Ranchero oil, alternator, & high beam indicators!

Receives this today. Installation was easy. Very impressed with the output. Lights up the cabin with excellent clarity and brightness

I'm not a fan of bright white/blue LED's they hurt my eyes especially early morning or night, my vehicle (toyota 4runner) OEM has amber incandescent bulbs so I wanted to stick to that stock look. These do work but I don't think they are brighter than the original bulbs were.

Quick and easy upgrade for map lights over rear view mirror. Way brighter than OEM.

*** Great product, Good price, Fast delivery, Nice seller ***

These we're just what I needed is just what I was looking for for my 2002 Infiniti Q45 for the map light. Because mine had the old school Round bulbs with the round metal tip. These are perfect for anyone who has that kind of a setup in their vehicle. Fit perfect work super bright to not ask for a better LED light.

Works and should. Nice and bright.

Great

Worked perfectly with clear lens in aftermarket motorcycle signals.

These Lads are quite good

I wanted these for daytime running lights on my old Mercedes. The previous brightest BA9 bulbs I could find were halogen and really not very bright. I looked at several LED bulbs but they were very wide or very long at light emitting end and would not fit in my Hella housings. These are only very slightly wider than at the bayonet end, are not extremely long, and put out a bright white light which is just about right for my DRL's. Good product which appears well made.

Product was delivered on time and works well as map lights in my 2006 Lexus SC430.