Using my horns with my remote & switch.

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=67307
Printed Date: July 07, 2025 at 10:56 PM

Topic: Using my horns with my remote & switch.

Posted By: xtremelowzfsc
Subject: Using my horns with my remote & switch.
Date Posted: November 30, 2005 at 2:22 AM

1994 Chevy C/K 1500 2dr, Recenlty installed 791xv, I wired in a polarity reversing relay to the (-)output of channel 4 to use with my train horns which are operated by a (+) electric solenoid valve. I can use the horns with my remote but I cant use the toggle switch in the cab. I am assuming I need a diode installed? I tapped the relay (+ outgoing) into the (+) wire for the valve. I believe the relay is picking up the voltage and grounding it out as everytime I use the toggle switch it burns the constant fused 12v source to the relay and toggle switch. I am a newb so please be kind and point me in the right direction. I have researched the information on relays and diodes but can't come to a conclusion on what to do. I did not install the alarm so if Im doing something completely wrong tell me to stop and I'll take it to the shop.

Thanks,

James

Replies:

Posted By: xtremelowzfsc
Date Posted: December 01, 2005 at 5:52 PM

anyone?

Posted By: redpeppers
Date Posted: December 01, 2005 at 10:48 PM

what wire is the toggle switch wired into assuming it is the 12volt wire to the horn u should ......from the 791xv u should have pin 85 negitive channel from brain.....86 12v constant.......30 horn side of the toggle switch (cut this wire).....87 12volt constant......and 87a (same wire u cut and used on pin 30) but use the other side of the wire that is goign back to the toggle switch.

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Where theres is a wire there's a way.

Posted By: xtremelowzfsc
Date Posted: December 03, 2005 at 10:07 AM

Ok it is wired like this now 12v+ from battery to momentary rocker switch then from switch to valve to control the train horns, now when I installed the relay, I took and used this diagram posted_image

I then took and t tapped the 87 into the wire going to the valve. So maybe that should help.

Posted By: xtremelowzfsc
Date Posted: December 04, 2005 at 9:44 PM

*update*

I got it working by putting a diode in.