single shock sensor input, I need more

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=18299
Printed Date: July 16, 2025 at 7:03 AM

Topic: single shock sensor input, I need more

Posted By: skyace4
Subject: single shock sensor input, I need more
Date Posted: August 31, 2003 at 12:58 AM

I have a Commando RS-560 alarm system in my 2003 Chevy S-10 pickup truck and the Commando RS-560 only has a single 4 wire sensor input on the brain box but I want to add a second vibration sensor to the unit, what is required and how is it done on the 4 wire connection for the Commando alarm?

it would be nice if Commando alarms gave people a second connection for a sensor.

Thanks, skyace4@hotmail.com

Replies:

Posted By: mista2turbo
Date Posted: September 01, 2003 at 7:49 PM

Most systems that ive seen have just the single 4 pin shock input. You can add addition sensors to the same plug using some diodes. Both sensors should use the same power and ground wire. the other 2 wires should be actual sensor inputs. just feed the additional sensor into these inputs using blocking diodes to 'Y' the 2 sensors into 1 wire. Do a search on 'diode' i know there are a couple of threads that illustrate and further explain how to do this.

Posted By: floaterr
Date Posted: September 05, 2003 at 1:21 PM

If you need a 2nd shock sensor on this size truck then the 1st one is installed in the wrong location.

I have had a regular s10 and no issues and have tried the setup you are looking for on a Blazer (S-10). Could never get the rear shock to work like I liked.

UNLESS you looking to protect the rear of the bed with a taneau cover or tool box. If this is the case you might want to look into installing magnetic switched on both corners of the the door/cover. This way even if someone tugs on the door/cover it will move enough to trip the alarm.

Good Luck!

Posted By: skyace4
Date Posted: September 12, 2003 at 11:42 AM

I have a Commando RS-560 alarm system and the origional shock sensor is hooked up to the brain box yet the brain box only has the 1 input ( 4 wires ), how could I tie in a 4 wire Field disturbance sensor to the shock sensor?

I will need diodes but how many, is it on both sensor units and what polarity on what wires?

Your help would be appreciated for the Commando unit.

skyace4@hotmail.com posted_image

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Posted By: floaterr
Date Posted: September 12, 2003 at 12:28 PM

search proximety detectors or dual sensors. microwave

or here

Posted By: djfearny2
Date Posted: September 12, 2003 at 12:39 PM

hey man whats up
check this out you will need four diodes this is because most sensors have to actual trigger wires one is a warn away and the other is a full panic. the difference between the two is the time in which the negative pulse is on the warn away it is quick and short and the full it is longer so the alarm knows to trigger alarm.

for the new sensor you can one give it a ground and a five amped fused constant. not from alarm. if this is a proximity sensor or microwave sensor you will want to put a small toggle on the ground wire. because in heavy rain storms these sensor begin to bug out . so put a small toggle switch on the ground wire sio if your having problems you can shut it off.

now for the diodes, your going to take all four and face them the same way.. the stripe side of diodes are going to face the sensor becaue most sensor through a negative signal. cut the two trigger wire going from the shock sensor to alarm but leave pos and neg connected. than do the diodes on the shock sensor as well as the second sensor and then finally connect them to the original shock sensor wires test and you should be ok as long as diodes are right and everything. make sure both sensors have power and ground then test and adjust each.

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Jon
Installer/Help Technician
---coral springs florida---
mecp certification is not always needed. I have it and it has not helped me out at all. my experience out shines it.