Disable Factory Alarm

Koji, i have a question about that, I told that to my mechanic asking if it were possible, and he told me that if I did it i would more than likely make the car think i was trying to break into it and it would trigger a starter disabler which would in turn obviously mess up my starter, is this true?

Not true. The car doesn't care if anyone is breaking into it until the alarm is armed. In order for the factory alarm to arm, all points must be closed. By tricking it into thinking that the hood is always open, it will never arm, and therefore never care enough to disable anything.

Yea, like everyone one said, it wont hurt anything.

As to your mechanic, he needs to understand the alarm a little better, but I don't blame him at all.

When in disarmed mode, the OEM alarm will arm itself ONLY if all the conditions are right. That would be for all zones to be closed. That would be the doors, hood, and trunk, and no one starting the car. Once it determines those conditions are met it will arm. The confusing part about his to some is that when all zones are closed, it actually means that the circuit it open. If a zone is open (One of the doors/hood/trunk is open, than the OEM alarm will not arm. Using the paper clip method as Koji nicely printed up will close the negetive loop as you can see. This will trick the OEm alarm into thinking the hood was open, and it will NEVER arm.

Now, if the OEM alarm was already in ARMED mode, than opening a zone will cause the alarm to trigger. Make sense?

Thanks guys. But would this affect how my Viper works? I'm not sure if it is hooked up to the hood or not.

Thanks guys! i just tried and everything works great! The plug was a pain to get to though.

As far as the hood pin and aftermarket alarm, I ran a new wire myself. What I did was keep the connector connected. Then I cut the return line to the car side. I then grounded the wire on the car side, so the OEM alarm thinks it has an open hood. On the other side leading to the hood switch, I afixed another wire and ran that all the way back to me aftermarket alarm. Now, the hood switch acts as my pin switch for the aftermarket alarm, but since I grounded the wire leading back the car side the security module thinks the hood is open and doesn't arm the OEM alarm.

ChrisK said:

As far as the hood pin and aftermarket alarm, I ran a new wire myself. What I did was keep the connector connected. The In cut the return line to the car side. I then grouned the wire on the car side, so the OEM alarm thinks it has an open hood. ON the other side leading to the hood switch, I afixed another wire and ran that all the way back to me aftermarket alarm. Now, the hood switch acts as my pin switch for the aftermarket alarm, but since I grounded the wire leading back the car side, the security module thinks the hood is open and doesn't arm the OEM alarm.

Click to expand...

Hmm.. Interesting. I'll make a note of that. My 6-speed uses the factory hood switch for the aftermarket alarm (my auto has a seperate switch). If my factory alarm starts acting up, I'll know what to do.

Thanks, Chris.