Old light bulb (eg 1157) replacements LED and other brake lights

Posted on: May 16, 2018, by :

The same effect occurred with tail-lights (above); here, the LED bulbs do indeed see brighter.

2) Rewire the bulbs so that the brake light would not double as the turn signal; instead, the turn signals would be shared with the backup lights, which would move to amber bulbs. The down-side is, of course, amber backup lights. The up-side is that research shows that combination brake / turn signals are less effective; and this modification also makes installing the LED third brake light easier.

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There are ways to install good LED panels into older cars, such as cutting multiple-LED panels to fit the shape, or getting a panel designed specifically for your car. Some companies are starting to do decent LED drop-in replacements, but youll still need to be careful; even the majors put out some ribbish.

Find out how we installed an LED third brake light, and whether it was worth the time and trouble!

Resources:Daniel Stern LightingMopar Action

After seeing the results, lighting specialistDaniel Sternmade the following suggestions for tail-lights:

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The fit was perfect and easy, but thats where the good news ends. The LED bulb was not nearly as bright; even at its brightest point, it doesnt match the light output of the standard bulb. Looking at it head on, one could make the argument that perhaps it would be a little brighter in the center inch, but from any angle that advantage disappeared completely. The LED just had one advantage over the old bulb: it litinstantly, with a very clear difference in reaction time which could be important in real life.

The photo above shows the standard bulb on the left – a 1974 bulb, we presume – and the LED on the right. Its no better in person, though a bit less orange.

Our Plymouth 1974 Valiants tail-lights were barely visible in the rain, so we spent $17 at AutoZone for a pair of super-bright LED replacement bulbs. You can see the promises on the new bulb packet.

Now, we see our aged, standard bulb on the left (probably the factory bulb) and a new, standard $1 bulb on the right. It seemed ever so slightly brighter.

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Dan claims the P3496 lamps are 40% brighter. We dont even have to tell you which is original, and which is new. (Oh, and they dont really look orange; the camera couldnt deal with the spectrum properly.) The new side marker lamps, 2886x, are 60% brighter, according to Dan.

3) Use a better bulb. He sent four conventional sidelight bulbs, which were visibly brighter than their predecessors; and a pair of new brake light / turn signal bulbs. These tested out as being more powerful, to the tune of around one f/stop on our light meter. The difference is pretty visible in the photos, too, first in the tail lights (one side is the standard bulb, the other is the P3496)…

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1) Use anLED third brake light(read about it!)

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