wireing start kill wire, ground when armed Options

[Hanyo]

how do you guys wire up the "ground when armed" out put on an alarm.


This is the very common orange wire on alarm. When the alarm is armed this wire will ground itself, so it is designed to operate a relay.

But doesn't that mean it will have parasitic drain on a battery the entire time the car is off?

Is there a way to wire up the relay so it is on when the alarm is "disarmed" so it will only draw power when the car is running.

[zonz540]

What are you trying to do here?
Youll need to run a relay that runs (-) when the ignition is seeing 12v. Id just bypass the ground when armed, unless you NEED to use it?

[Hanyo]

I have a new problem.

I have wired up a fuel pump kill switch to the "ground when armed" output on my alarm. But apprently DEI (xp881 alarm) uses the ground when armed output as anti-grind. So basically whats happening is when i have Antigrind option turn on, the fuel pump gets cut out and the car wont start. When I turn off the Anti-grind my remote starter never dis-engages the starter after starting the engine. The starter keeps turning the entire time the car is on.

[zonz540]

Try using the factory arm/disarm outputs to switch on/off a relay controlling your fuel pump. When the car is armed, the relay would latch (-), and when the car is disarmed (including when the remote start is activated) it would show 12v. This would allow your system to work the same as the ground when armed (orange) output, but also letting you bypass the issue with the starter anti-grind.