horn has power at all times

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=100447
Printed Date: May 11, 2025 at 5:02 AM

Topic: horn has power at all times

Posted By: ramtags
Subject: horn has power at all times
Date Posted: December 26, 2007 at 5:15 PM

2004 dodge ram 2500 diesel . i have the factory installed security system with keyless entry. system went off by it's self . first time i was able to reset , then it happened again .
this time the horn would not go off. had to pull fuse. now horn is got power to it at all times and if truck sits for 2 or 3 days batteries are drained enough that it will not start. i would like to disable this part of the system if possible. or does it call for a new module

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jackd

Replies:

Posted By: i am an idiot
Date Posted: December 26, 2007 at 8:01 PM

When you say the horn always has power, are you saying it is always sounding? Or there is always 12 volts on both terminals of the horn?

Posted By: ramtags
Date Posted: December 26, 2007 at 10:04 PM

yes, if i were to put the fuse back in the horn would continually be sounding.

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jackd

Posted By: i am an idiot
Date Posted: December 26, 2007 at 11:28 PM

Have you tried to locate the security system? Sounds like there may be a problem with the horn honk output of the system. It is possibly keeping a relay energized, thus pulling the battery down. If you find the system try unplugging it, put the fuse back in and see what happens. If it still goes off you will need to look for a wire at the steering column under the dash. According to info found here it will be a BLACK/ red wire. If you find that wire and it has something connected to it you will have to trace it back and see if there is a relay connected to it. IF you find the relay remove one of the wires that are connected to terminal 85 or terminal 86. Plug the system back in and put the fuse back in and see what happens.