resistors for my leds

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=66716
Printed Date: May 11, 2025 at 7:24 PM

Topic: resistors for my leds

Posted By: alexv96hrdbody
Subject: resistors for my leds
Date Posted: November 21, 2005 at 2:56 AM

i purchased a 49 in led line of fire. its a 3 function led and i am trying to turn it into a 4 function. meaning, i have both turn signals, and parking lights and stop light but at night when i have the parking lights on they = the same amount of power as the brake lights, resulting - i have no brake light function when the parking lights are on. so i have to lower the voltage from my parking lights. which kind of resistor sould i use.

thanks, av

Replies:

Posted By: kirktcashalini
Date Posted: November 21, 2005 at 2:16 PM

Ned to know the rating for the LEDs, what the voltage drop is, how there wired, and how many mAh each... then, when you know it, calculate that ish posted_image

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Posted By: boyzWidToys
Date Posted: November 27, 2005 at 9:56 AM

led's are generally 20 ma

Voltages depend on the color.

white is about 3.4v

and.. leds... don't really have a defined resisitance. they are a constant current device.

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