looking to replace these with LEDs

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SternWake said:
These are BA 15s bases.  While the bulb base itself is a common size, how it is mounted to the vehicles lighting fixture within the vehicle is not.

Check rockauto under your year make and model, electrical connector.

It's actually for the inside of a truck camper. As long as the base is correct it should light up right?
 
The base is refereed to as a DC bayonet (Double contact) or SC bayonet (Single contact) depending on the bulb, single or dual element.
1156 is a typical trade name and I believe the bulb originated form a GE P21W.

I'm no Expert but its the data I found in the last minute on the internet
 
I misunderstood the intent.


1156 bulbs are the most common bulb which uses the Ba 15s base and will yield the most hits on Amazon.

As somebody who has ordered dozens of LED bulbs on Amazon, it really is a crapshoot whether the light output and color will be acceptable,  The amp draw will certainly be much less, but many bulbs are very bluish, and I personally Despise blue in my white, and do not get me started on those who install blue HID kits into their halogen light housings for vehicular headlamps.

Generally, LED bulbs in incandescent fixtures do not make good use of the reflector.  Many times the only effective light will come from the individual LEDS pointed downward, on a ceiling mounted reflector.

There are some LEDS designed to fire all their light in only one direction and not even bother trying to make use of the reflector.  Reflectors are designed around a very bright precisely positioned filament and radially firing LEDs attempts to mimic this fail and often fail miserably.

http://www.amazon.com/Gold-Stars-11...UTF8&qid=1425952986&sr=8-10&keywords=1156+LED

The LED bulbs suitability in your lighting fixture will vary widely depending on bulb and fixture and reflector and lens design.

There are also warm white LED bulbs that are a color closer to incandescent, but in general these are a smidge dimmer.

I recommend getting extremely bright 5050 SMD LEDs, and then taming them with a pwm dimmer if needed, but there are some bulbs which will not respond to a pwm dimmer.  Usually these will say 10 to 30V DC input voltage.

http://www.amazon.com/Triangle-Bulb...qid=1425953614&sr=8-1&keywords=pwm+led+dimmer

Please do not try and use retrofit LED bulbs in Signal markers on the vehicles safety lighting.  Especially dual filament bulbs, as there is not enough brightness difference between running and signal light, and often they are nearly invisible at off angles.

Phillips is making some LED retrofit lights that are DOT compliant, but only in some vehicle's reflectors.  Using LED bulbs in housings designed for incandescent bulbs on exterior vehicular lighting is illegal and can be dangerous.

Just because there are millions of ricers doing it does not make it acceptable, nor an improvement, only different.

 
 
Thanks for the heads up. Will probably go with the flat array linked by Stern and something like your second link for the direct lamps.
 
K1ngN0thing said:
Thanks for the heads up. Will probably go with the flat array linked by Stern and something like your second link for the direct lamps.

If LEDs are going to be unwisely put into taillights, they need to be the same color as the lens.  Putting a cool blue behind a red lens is going to reveal a dim pinkish purplish illegal unwanted attention grabbing light.

One should also be aware of these panel options.  Some Say these are the brightest type.  not specifically my link below though, these are for example only.  These adhere with some double stick tape to the roof of the light's reflector and fire only in one direction, an area where LEDS are well suited.  they can plug into many different types of bulb bases too via the adapters.

http://www.amazon.com/Cutequeen-Tra...TF8&qid=1425977125&sr=1-3&keywords=LED+panels

If looking at reviews, look for the most recent, as older batches of LEDs bought in bulk might have been the prime pLEDs of the batch bought to fabricate the panels,  and now they are selling the dregs with bad color.

Most all my LED acquisitions have been the T10 wedge base bulbs, not the 1156 /ba 15s, nor festoon style.

By far the Best LEDs have been from Phillips. Good light color, good intensity, and very low electrical consumption.
 
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