Sonar 420 Alarm
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=59051
Printed Date: April 28, 2024 at 1:42 AM
Topic: Sonar 420 Alarm
Posted By: TOLiS_GR
Subject: Sonar 420 Alarm
Date Posted: July 08, 2005 at 3:49 AM
Hi all, I want to ask some wiring information if it is possible. A friend of mine gave me an old Sonar 420 alarm from his bike (but it's probable a car alarm) which had some broken parts inside and I repaired it. But that's the easy part. I want to connect it to my bike now and when I started "playing" with the alarm, the remote control stopped working. I installed a new battery but it's still not working so I think it needs programming. But I dont have any idea on how to do it... Also I need some help on the wiring. I found these: Brown-> Chassis Red & Blue are together fused on the battery Purple, Brown and BLACK/ White go to the sensor box Two thicker Gray colored wires? Yellow, Black, BLACK/ Grey, BLACK/ Green, Yellow/White, Yellow/Red, GREEN / WHITE and two Greens I think I can find out which go to the flashes and probably to some more lights, but any help is welcome :) Thank you all :)
Replies:
Posted By: Powermyster
Date Posted: July 08, 2005 at 4:59 AM
two green i would guess would be for the indicators. i'd recomment a new system. by the sounds of it. that system is old and wouldn'd probabaly be prone to letting you down
Posted By: TOLiS_GR
Date Posted: July 08, 2005 at 5:10 AM
Well, the two greens are for the indicators ;) The Black one is a normaly open switch, when grounded the alarm goes off. The GREEN / WHITE is the armed LED. Couldnt find anything for the others. I'd love a new alarm, but this one I got it for free ;) It would be nice if I could use it ;)
Posted By: Powermyster
Date Posted: July 08, 2005 at 5:18 AM
i know but i'd rather a new system myself. also what sensor do you have. for a bike i would use a tilt sensor. one that auto levels when armed. the bigger grey wires might be starter kill!!! for the sensor you should have 12V, Ground and neg trigger i never done a bike but here is what i would expect. for the connections in an alarm. 2 indicator wires. Constanat 12V Ingnition 12V sensor. LED Valet Switch. sirens starter kill.
Posted By: TOLiS_GR
Date Posted: July 08, 2005 at 5:37 AM
Well, I'll check the grey wires to see if the work as a switch ;) It has a sensor box with 4 tilt switches and a shock sensor inside, this was broken too but I fixed it ;) The constant and Ignition wire (red and blue) are both connected together to a fuse box with two fuses and from there one red wire only goes to the battery. The siren is integrated in the alarm box (which also has a battery back inside - possible the batteries are dead but I have to check this too) Any ideas on how to find the Valet switch? for example with the alarm ON, I should ground the wires I don't know what they do? I used a voltmeter and they don't seem to have any current Thanks for the replies :) I know it's an old system ('96 - almost a decade old) It also has a LED on the sensor box and trimmer for the sensitivity, but there's also another LED inside the box besides a 6 small switch array (don't have a clue what they do though)
Posted By: TOLiS_GR
Date Posted: July 08, 2005 at 6:01 AM
Yap the grey wires are starter kill or something. they are an OPEN switch when the alarm is ON and a CLOSE switch the alarm is OFF :)
Posted By: Powermyster
Date Posted: July 08, 2005 at 6:04 AM
i've never worked with these. if it has a valet switch i would guess that he two wires would be joined usually when you press a valet switch it connects these wires together but all valet switches across different manucatures behave differently. to enter programming or valet modes.. i would not get power at the battery its too obvious. for a theif. although maybe not easy to access on some bikes. i always get connections at the ignition harness or try the fusebox. for power and ignition sires. let me know if the grey's behave like a switch
Posted By: TOLiS_GR
Date Posted: July 08, 2005 at 6:20 AM
So... I'll try connecting together some of the wires that I don't know what they do :P The grey's do behave as a switch. When the alarm is OFF (disconnected from the battery or closed with the KeySwitch because the remote doesn't work) it behaves as a CLOSED switch (current passes through) when the alarm is ON it's like an OPEN switch (no current passes through). I checked it using the beeper of my multimeter :P
Posted By: Powermyster
Date Posted: July 08, 2005 at 6:28 AM
cool do you reackon that the wires are a big enough guage for the starter. if not use it on fuel pump or coil etc. did you try google the sonar to see if you can learn how to progam the remote. has the alarm brain/siren got a key switch on it. if so there might not be a Valet Switch
Posted By: Powermyster
Date Posted: July 08, 2005 at 6:29 AM
same is true if you have some kind of transponder with the fob. usually the recepticle for this is part of the LED
Posted By: TOLiS_GR
Date Posted: July 08, 2005 at 6:34 AM
they are thicker than the rest of the wires ;) I'll probably not use them though ;) Everything I found about Sonar was about fishing and stuff :P I contacted the company twice (www.sonar.va.it) but they didn't respond, I think it's a security problem or something and I don't blame them, but I can even provide them with the serial number on the pcb. I have the alarm on my desk but anyways...
Posted By: Powermyster
Date Posted: July 08, 2005 at 6:35 AM
ok well i think this is as far as i can help you . next step is to get the remote hooked up
Posted By: TOLiS_GR
Date Posted: July 08, 2005 at 7:16 AM
Thanks for your help :) If I manage to get anything more I'll post it to the forum ;) till then gonna get something to eat and then try the wiring some more times ;)
Posted By: Powermyster
Date Posted: July 08, 2005 at 7:35 AM
good man.. there might be a ground when armed output and has the remote got accessorie buttons. if so some of the wires might be aux
Posted By: TOLiS_GR
Date Posted: July 08, 2005 at 9:40 AM
well, I found that the Yellow wire is -12V all the time, I used the multimeter positive on my battery's + terminal and the negative on the Yellow wire. It always shows +12V, both at armed and at disarmed alarm state
Posted By: Powermyster
Date Posted: July 09, 2005 at 4:39 AM
dunno whats thats for
Posted By: TOLiS_GR
Date Posted: July 09, 2005 at 3:30 PM
I also have another wire in question... the black wire that sets the alarm on whenever it get's grounded. If I turn the alarm on and it's grounded the alarm goes mad. can that be the Ignition wire and not a sensor? I noticed that whenever the alarms goes off from a sensor in the sensor box (tilt and shock sensors) the blinking LED stays ON constantly, but if the alarm went off while grounding the black wire, the LED blinks faster after that ..
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