Alarm is on '98 ford ranger. my son worked for circuit city and installed himself years ago. I added auto door locks months back and they worked fine. lately the alarm will not arm/disarm - doesn't appear to be remote - have two and problem persists with both - is there a possibility there is a loose ground wire?
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Re: intermittent arm/disarm of Python model 560XV
This "could" be a bad ground, however, usually when these units lose ground, they activate the siren at a really low level, because they are trying to ground through the siren.
I would say to check where the antenna plugs into the main unit,(brain) but honestly, in 17 years of dealing with DEI alarms, 99.9% of these problems are due to the transmitter - it may blink the LED like it is supposed to, but that doesnt gaurantee it is sending a signal. I would recommend buying a new transmitter and programing it to the brain.
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Apparently the alarm is set to passive arming and, once you disarm it, it immediately begins the arming process and it is not registering the door being open. I'm going to go out on a limb and say that the alarm door trigger is wired to the dome light and the dome light is turned off; an issue that occurs with GM vehicles that have a dome light override switch. What's the year, make and model of the vehicle?
I cannot tell you why the factory alarm is triggering at one place and not the other but I can tell you that the remote starter is not disarming the factory alarm. In order to disarm the factory alarm, the remote starter must supply a ground pulse to the disarm wire at the body control module (BCM). The BCM is located in the driver side kick panel and the wire is black in pin "L." To arm the factory alarm, the same wire needs a ground pulse through a 1k ohm resistor. I have not installed the 1401, so I am not sure if that particular unit has outputs for factory arm and disarm, most DEI products do have at least a disarm wire that is light green/black. This wire outputs a negative pulse that should disarm the alarm without the addition of relays. If 1401 is equipped with a alarm rearm wire it would most likely be green/white. This wire also outputs a negative pulse but it will not be sufficient in rearming through a 1k ohm resistor without a relay. The relay terminal would be wired as follows if the 1401 is capable of this feature:
30 = vehicle black wire (solder in 1k ohm resistor) 87 = chassis ground 87a = no connection 85 = green/white wire of 1401 86 = 12v constant (fused - 5A is more than enough)
Its going to be either the wires going to the locks or the programming in the alarm. The only way to tell is to get the wiring tested. A plug could have just pulled out also. Do many variances for one straight answer.
That does not sound intierly tru but what is the year ,make and model of your car and i can check for you. but if memory seves me right it just consists of alot of extra work that most tech's dont like to do.