maglite led in fog light?
Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=101576
Printed Date: October 30, 2025 at 8:15 PM
Topic: maglite led in fog light?
Posted By: eeh1025
Subject: maglite led in fog light?
Date Posted: January 25, 2008 at 9:06 PM
Hey there my maglite led flashlight is very bright with a wide angle and i wouldlike to use them in my fog lights, my question is what resistor should i use to reduce them and what is there voltage, any info would be great
Replies:
Posted By: techman93
Date Posted: January 25, 2008 at 9:41 PM
How many batteries are in the flashlight? Is it 3 D-cell batteries? They are 1.5v dc. so you will multiply 1.5 x 3. The total voltage will be 4.5v so you could use a voltage regulator to 5v+ dc from Radio Shack per side. The part is a 7805. They will cost you roughly $1.60 each. That is how I would hook them up. I also would buy a relay and switch. You will wire relay as follows.
pin 30 to 12v+
pin 86 to ignition 12v+
pin 85 to switch*
pin 87 to both voltage regulator inputs
* the second side of switch to a solid ground
if a lighted switch then change pin 85 on relay to solid ground and pin 86 to switch output. Then ground switch and the input will be ignition 12v+.
With the voltage regulator flat on a table with legs facing down, the left most pin is input, middle is ground and right is output. Hope this helps you on your project.
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The wire I'm test'n isn't doin' what it's supposed to be doin'... I am so glad I printed that tech sheet, with the wrong info.
Do it right the first time... or I might have to fix it for ya
Posted By: i am an idiot
Date Posted: January 25, 2008 at 9:58 PM
Just insert a 1K resistor in series with the LED.
Posted By: eeh1025
Date Posted: January 26, 2008 at 8:48 AM
Hey there thanks alot, one more this would you run it direct to the led or run it to the housing that the led id in.
thanks alot
Posted By: i am an idiot
Date Posted: January 26, 2008 at 9:39 AM
That would be totally up to you.
Posted By: eeh1025
Date Posted: January 26, 2008 at 10:38 AM
would it make a difference, whats the circuit board in the bulb for?
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