Remote Start pins on Ungo 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=27520
Printed Date: August 14, 2025 at 7:08 AM

Topic: Remote Start pins on Ungo alarm

Posted By: sterrell
Subject: Remote Start pins on Ungo alarm
Date Posted: March 01, 2004 at 3:24 PM

I have an Ungo ms2005 alarm and there are 6 pins for remote start labeled as follows:

1. Starter Output
2. Accessory Output
3. Ignition #1 Output
4. Ignition #2 Output
5. 12 volt Input
6. 12 volt Input

I have a couple questions about these:

First, the remote start is going into a 1992 Firebird, which I believe means that I will not use the Ignition #2 ouput since the car does not have such a wire. Is this correct?

Second, why are there two 12 volt inputs? I have a feeling this question might be the reason for my remote start system failing.

Right now I have the starter output and the ignition #1 output hooked up. I also only have 12 volts going to the #5 pin 12 volt input. The car started all yesterday and today it seems that the remote start is not delivering power to any wires. So, my third question is why did the system fail?

Any ideas would be appreciated. Thanks.

Scott

Replies:

Posted By: Toru
Date Posted: March 01, 2004 at 4:57 PM

I can see why you are asking about the two +12V input (A and B) - the install manual doesn't say anything about these connections! I don't see the harm in connecting both A and B to +12V.

And I would guess that ignition out #2 does not need to be connected, since your year of Firebird has just the one ignition wire (as per the database here).

Posted By: sterrell
Date Posted: March 01, 2004 at 5:30 PM

Any ideas of why the remote start would stop working?

Posted By: Toru
Date Posted: March 01, 2004 at 5:38 PM

I would suspect a loose wire or bad connection. If you can measure +12V on the input and when remote starting you see nothing on the outputs, then I would suspect the brain is malfunctioning (given no other loose or bad connections).

How did you do your connections? Solder, crimp, "vampire tap"?

Was this caused by not hooking up both +12V feeds? I don't know. It seems that if it were important they might at least mention it in the install guide.

Posted By: sterrell
Date Posted: March 01, 2004 at 6:16 PM

The wires that come with the alarm have the terminal connectors crimped on already. I have just tapped into the appropriate wires (igniton, starter) at the other end using those tap in connectors. That is the only place I could have gone wrong. I just thought of something though. Since those 12 volt inputs (or at least one) are powering the onboard relays for the remote start system, and none of the functions controlled by those relays is functional, maybe the fuse blew on the 12 power supply wire. Does this sound possible? Otherwise, I'm thinking that the onboard relays went bad or something.

Posted By: Toru
Date Posted: March 01, 2004 at 10:53 PM

First, I would toss the tap connectors and solder the connections.

Second, yeah, the fuse is a good thing to check. If it IS blown, then you need to ask why (short?).

Posted By: sterrell
Date Posted: March 02, 2004 at 12:15 AM

So the problem was a blown fuse on the wire supplying +12 volts to the onboard relays. The question is, what caused it. THe wire runs straight from the red +12 v wire under the dash to the brain. The only thing I can think of is that maybe both of the +12 v inputs on the brain need to be getting power to somehow reduce the current drawn by just one. Any other ideas? Tomorrow I will hook up both 12 volt wires when I get two new fuses.

Thanks