Wiring LEDs and Battery Draw
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=36751
Printed Date: June 04, 2024 at 10:56 PM
Topic: Wiring LEDs and Battery Draw
Posted By: RHPF
Subject: Wiring LEDs and Battery Draw
Date Posted: August 03, 2004 at 11:32 PM
I want to use 4-6 LEDs for my alarm (basicly red, and will flash when its supposed to flash). How do I wire them (never wired LEDs before but know how to wire other things, so like resistor values and what not)? And what would be effecient as to avoid battery drainage. I am assuming im going to need a relay of some sort, just not sure which kind.
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04 Silverado EC
Replies:
Posted By: Ohmz
Date Posted: August 04, 2004 at 7:55 AM
Use your starter kill NEGATIVE OUTPUT WIRE. Diode isolate and use a relay. Your LEDs should not cause a battery drain unless your battery needs to be changed.
Posted By: xetmes
Date Posted: August 04, 2004 at 9:50 AM
a relay is a good way to kill the battary, i dont think i would recommend more than 2-4 leds to be on in a car that is not running for any extended period of time unless they are in a series relationship.
Posted By: RHPF
Date Posted: August 04, 2004 at 10:03 AM
Yea thats what I was affraid of, the relay killing the battery. Well I figure I can put 1-2 on the alarm LED output wire. If I put another 1-2 on the wire you mentioned without a relay but diode isolated I should be ok? ------------- 04 Silverado EC
Posted By: Ohmz
Date Posted: August 04, 2004 at 10:13 AM
You can do that but your light will be weak...
I meant- use the relay for your starter kill.... just diode isolate your (-) output from the alarm....
The most LEDs I ever hooked up was 2 along with little flashers..... it never died!
Posted By: RHPF
Date Posted: August 04, 2004 at 2:18 PM
Ohmz]Y wrote:
u can do that but your light will be weak...
I meant- use the relay for your starter kill.... just diode isolate your (-) output from the alarm....
The most LEDs I ever hooked up was 2 along with little flashers..... it never died!
Ok so perhaps a stupid question but how do I go about buying LEDs, like lets say I do 2 LEDs on the - output from the alarm what would I need to buy. 2 LEDS (what type/voltage/etc) and what resistors. ------------- 04 Silverado EC
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