Alarm LED, Diode and Starter kill

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=54964
Printed Date: May 28, 2024 at 3:37 PM

Topic: Alarm LED, Diode and Starter kill

Posted By: caryb
Subject: Alarm LED, Diode and Starter kill
Date Posted: May 02, 2005 at 9:18 AM

I am trying to install a new LED, per the instructions here red +12v wire to +12 volts, negative with trough a diode to the negative statrer interupt wire. When I try this, the LED flashes slightly dimmer, wether the alarm is armed or not, and flashes brighter when armed.

Any ideas?

Replies:

Posted By: Satkunas
Date Posted: May 02, 2005 at 12:18 PM

The LED is finding a path through the coil of the relay to ground. Add a diode to the (+) input (probably from ignition) of the relay to prevent this.

Ignition -->|-- (pin 86) Relay (pin 85) ----- ground-out-while armed.

Hope this helps.

Posted By: caryb
Date Posted: May 02, 2005 at 12:23 PM

Satkunas wrote:

The LED is finding a path through the coil of the relay to ground. Add a diode to the (+) input (probably from ignition) of the relay to prevent this.

Ignition -->|-- (pin 86) Relay (pin 85) ----- ground-out-while armed.

Hope this helps.

Should the diode (cathode) stripe be facing the relay?

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