Hacked Gadgets Forum

January 2, 2011

Car Map Light Cheap Fix

at 5:26 am. Filed under DIY Hacks, Electronic Hacks


Not sure why car manufacturers held onto bulbs for so long. LEDs are the dream solution to the high vibration hard to get to locations that these car bulbs are normally found. Our friend Pete Mills had one of his map lights go bad, the fix for him cost a few dollars and the parts were easily harvested out of a cheap LED light. Benefits of this cheap fix is it will never need to be touched for the life of the car, the light will be more pleasing and draw next to nothing for current.

“You can also see the PCB traces I cut to allow the parallel/series modification.  The +/- 12v (nominal) power leads on the LED board are soldered to the wires that used to deliver battery voltage to the incandescent bulb.  The connector for the original lamp was left in place electrically and solder joints were insulated against short circuits.”



Cialis temsilcisi tek olarak ithal ve cialis . As might already we be at big of and which probably...

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9 Responses to “Car Map Light Cheap Fix”

  1. Whatnot Says:

    Did you forget to link? Or am I missing something?
    anyway if you did:

  2. Alan Parekh Says:

    Hi Whatnot,

    Yes, I somehow forgot the link… It has now been added.

    Thanks for the reminder and happy new year!


  3. Gut An LED Tap Light To Upgrade Your Car’s Map Lights | Lifehacker Australia Says:

    […] LED Map Light Replacement [Pete Mills via Hacked Gadgets] Tagged:carsdiylightingsaving […]

  4. Oliver Wende Says:

    Using LEDs instead of bulbs seems like a good idea! I replaced every bulb that illuminates the car with LEDs a few years ago, but i’m not sure if i would do it again.
    Yes, it’s a lot brighter and i like the “cold” color of the light but i had to replace about half of the LEDs because they were broken.
    Only use the best quality LEDs you can afford! The temperature changes in the car somehow destroy the “not so well bonded” cheap LEDs…

    After all, it’s still a nice idea using parts of a LED lamp!

  5. Whatnot Says:

    Happy year to you too Alan 🙂

    @Oliver Wende that’s an interesting story, I had no idea that could happen, but fortunately you can buy many kinds of LED headlights and such for cars with many individual LEDs to harvest and those should be suited for car use.

    Are you sure you aren’t just making mistakes in calculating the resistor though? Or maybe it’s the resistor that changes value under temperature changes and causes LED to blow, or maybe it’s surges in the electrical system even.

  6. Whatnot Says:

    Make that happy new year (forgot the new, I’m very tired and unfocused). And happy new year to oliver too of course.

  7. led Says:

    the LED looks nice. Do you have some pictures at night time?

  8. Whatnot Says:

    That’s actually a good question, Why aren’t there some pictures of the difference on where it’s shining on rather than only the fixture, but hey that keeps doing it yourself exciting I guess 🙂

  9. Mike Nott Says:

    why not just buy LED replacement bulbs instead of going through all the hasel to modify the fixture?

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