led turn signal, potentiometer?
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=62785
Printed Date: May 04, 2024 at 6:00 PM
Topic: led turn signal, potentiometer?
Posted By: gsus
Subject: led turn signal, potentiometer?
Date Posted: September 16, 2005 at 9:55 PM
hi guys, i did a quick search before posting this... but nothing came up on "potentiometers". i'm looking into buying some amber LED turn signal bulbs (1157) for the front turn signals of my car, and i was told that the turn signals would flash really fast due to the low resistance of them. then i was told that the best way to go about this is with a 10ohm resistor... but is that a 10ohm resistor per side? also, will i risk frying wires if i do this wrong(i dont want to have to redo my wiring harness if that happens)? i was thinking of doing the LED thing all around, after i tried the frong of the car... will it be a bad thing if i have resistors all over the wiring(will that cause wires to burn out?)?
another thing that i was told is that i can use a potentiometer. i was told it will let me adjust how fast the lights flash... any of you guys heard of this?
so are those my only 2 options or is there something else that i can do to make the LED's flash normally?
thanks in advance for any help
-gsus
Replies:
Posted By: genlydz
Date Posted: September 21, 2005 at 11:33 PM
Using the LED for a turn signal is a great idea. However you lost me on using a resistor to flash the LED? Does'nt your car already have a flasher circuit built in. Basically if you plan to use LEDs for 12 applications, you should at least place a series resistor for each lamp. 220 ohms 1/2 watts would work best. ------------- gene
Posted By: modena0
Date Posted: September 30, 2005 at 4:18 PM
What i think he meant was that if he only puts a LED in, the resistance of the LED would be so little in comparison to the incandescent that it would pull current through the system too fast and therefore make the blinker circuit act too quickly. i believe you answered his question by telling him to put in a series resistor.
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