Shock sensor placement
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=21623
Printed Date: July 15, 2025 at 7:54 AM
Topic: Shock sensor placement
Posted By: neotheone
Subject: Shock sensor placement
Date Posted: November 17, 2003 at 10:35 PM
Hey,where is the best place to put a shock sensor in a 2000 Blazer with a 2WFMAS Compustar?
Replies:
Posted By: vaderfop
Date Posted: November 19, 2003 at 5:47 PM
I have always placed shock senors anywhere on a part of the frame. If there is a part of it under the dash that it. That way it more likly to go off when struck.
Just my opinion.
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Remember check all your wires with a DMM!
Posted By: Teken
Date Posted: November 21, 2003 at 12:32 AM
The best place is where the sensor will detect impact equally in all area's of the vehicle as it was stated before above.
Some simple tips to ensure this is done. Always fasten the sensor(s) using self tapping screws. Never use double sided tape, velcro, or wire ties. All three forms of fasteners only insulate and cause uneven pressure points to be detected and to cause erractic opperation and falsing.
Positioning the sensor in a central location is usually the best suggestion. Always keep the sensor away from heating ducts or plastic area's that will creek and pop during cold or hot days.
Doing so will only promote false alarms and sound abatement tickets and tow aways.
When testing your sensors for impact / sensitivity. Use a open hand and a oven mit.
The use of the oven mit will provide a real world attack when *tape measures* are used upon glass, or where small dings from a door are seen. This will also protect the panels from being dented from a heavy hand.
Follow up with applying impact with using your knuckles and ensure the rear of the vehicle is as sensitive as the front.
Many installers apply the sensors to the steering column. Some get away with this lazy technique, but this makes the front end of the vehicle more prone to false alarms.
If you are wiring this sensor yourself. Ensure that its negative lead is connected to the (-) negative output when armed, and not simply to ground.
This will ensure stable and reliable operation of the unit and the sensor(s)
The reverse of, will leave the sensor active all the time, and if you have a prewarm, and a pager. It will sound off all the time, regardless of being armed or not.
Regards
EVIL Teken . . .
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