Adding Dual stage shock sensor to OEM Al
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=36539
Printed Date: May 24, 2024 at 2:57 PM
Topic: Adding Dual stage shock sensor to OEM Al
Posted By: dexinefx
Subject: Adding Dual stage shock sensor to OEM Al
Date Posted: August 01, 2004 at 12:33 AM
Hi, I have an 04 honda accord with an oem alarm. It doesn't have a shock sensor it jusr alarms when the doors are opened. I didn't want to get an aftermarket alarm because the remote for the alarm is on the key already. I was wondering if I can put on an a shock sensor to work with the oem alarm and if so how..Any help will be greatly appreciated. Thanks all.
Replies:
Posted By: Velocity Motors
Date Posted: August 01, 2004 at 7:58 AM
Have the shock sensor wired into the ignition system so that when the ignition is off, this trips a relay to power up the shock sensor. Now, wire up another relay on the final trigger wire of the shock sensor to trip another relay to pulse a signal to the door trigger wire of the car. This will trigger the OEM system when the final trigger of the shock sensor is tripped.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: spokman
Date Posted: August 01, 2004 at 12:27 PM
I'm new at this but have a few questions. How come you need a relay to connect to the factory door triggers? Doesn't the sensor show ground when it is set off? If you have door triggers that show ground wouldn't that work the same without the relay? Also could you rig a piezo speaker from your 1st stage to perform the warn away function? I figured out that the ignition relay is needed so you don't get a door ajar warning while driving.
Posted By: Velocity Motors
Date Posted: August 01, 2004 at 12:35 PM
The signal coming off the impact sensor may not be strong enough to trigger the door so a relay is installed to boost the (-) signal enough to trigger the alarm. The piezo idea would work as well but it will only trigger as long as the output on the 1st stage is activated.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: spokman
Date Posted: August 01, 2004 at 12:49 PM
Thanks Jeff! You really know your stuff!
Posted By: dexinefx
Date Posted: August 01, 2004 at 12:56 PM
Thanks, Jeff but you wouldn't happen to have a wiring diagram into the relays would you...I'm new and a little lost in doing the relays. Any help would be great...thanks.
Posted By: spokman
Date Posted: August 01, 2004 at 1:31 PM
There's some info on this site on how relays work. Should be on the left under car security.
Posted By: markcars
Date Posted: August 01, 2004 at 1:32 PM
I tried to make up a drawing for those who want to see it. Jeff, let me know if I pictured what you said wrong or this is what you have in mind.
Click Here to see the quick drawing I made
Posted By: Velocity Motors
Date Posted: August 01, 2004 at 5:44 PM
Yup, markcars has the diagram correct. Thanks Mark for taking the time to make the diagram.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
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