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Driving L.E.D.'s


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GMC4x4Guy 
Copper - Posts: 117
Copper spacespace
Joined: March 28, 2002
Location: Washington, United States
Posted: December 05, 2004 at 3:36 AM / IP Logged  
I want my alarm to drive a total of 4 LED's. The manufacturer said I could only run two without problems. Any electronics guys know how to do this?
"Drive it like you stole it"
TheSaint421 
Copper - Posts: 137
Copper spacespace
Joined: July 07, 2004
Location: Canada
Posted: December 05, 2004 at 5:28 AM / IP Logged  

use a relay, so that you can power all 4, but not have the added power go back into the alram unit..

The saint

GMC4x4Guy 
Copper - Posts: 117
Copper spacespace
Joined: March 28, 2002
Location: Washington, United States
Posted: December 05, 2004 at 5:29 PM / IP Logged  
You mean a Bosch style relay? Wouldn't the current required to drive the relay be more than if I just ran the 4 LEDs in parallel? Maybe you mean a smaller relay?
"Drive it like you stole it"
metaverse 
Copper - Posts: 210
Copper spacespace
Joined: June 13, 2002
Location: United States
Posted: December 05, 2004 at 5:47 PM / IP Logged  
yes..that is what I was thinking..the led's might fry with 12volt..maybe introduce LED to resistor (s) I know you can wire them in series..I just did 2 and it works fine.
cdub74 
Member - Posts: 21
Member spacespace
Joined: November 27, 2004
Location: United States
Posted: December 05, 2004 at 6:14 PM / IP Logged  

The DEI629R would be the easiest way to go. I had a  couple of these modules on my last car and they are easy to install, plus I had them on the exterior (drilled into head & tail lights) and had no problems. About $20.00 on e-bay.

Teamrf 
Gold - Posts: 1,031
Gold spacespace
Joined: January 13, 2004
Location: United States
Posted: December 05, 2004 at 9:41 PM / IP Logged  

Find out what voltage the L.E.D's are and then use a small relay to power them. Just out of curiosity why are you powering so many leds?

~The Rookie~
Rookie of the year that is...
Don't let the smoke out of your equiptment..it doesn't go back in.
GMC4x4Guy 
Copper - Posts: 117
Copper spacespace
Joined: March 28, 2002
Location: Washington, United States
Posted: December 05, 2004 at 11:30 PM / IP Logged  
I'm concerned about the battery loss and constant "clicking" from the relay just for LEDs. If I run the relay trigger to a constant-when-armed lead from the alarm, is there a way to make the led's flash?
I already have two LED's integrated into a very expensive clock/information center and I'm not removing them. Then I saw someone with LED's in the headlight and it looked pretty cool. I was just entertaining the thought, but I know after I drill into the headlight housing it's past the point of no return.
"Drive it like you stole it"
carguy411 
Silver - Posts: 683
Silver spacespace
Joined: April 02, 2002
Location: United States
Posted: December 05, 2004 at 11:48 PM / IP Logged  
y dont u just get teh varard alarm flashing led's make your life alot easier
comes in all colors and there brighter than most regular alarm led's
GMC4x4Guy 
Copper - Posts: 117
Copper spacespace
Joined: March 28, 2002
Location: Washington, United States
Posted: December 06, 2004 at 1:05 AM / IP Logged  
I could, but I'm meticulous and they probably wouldn't flash at the same rate.
"Drive it like you stole it"

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