Relay wiring for multiple sirens

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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=35267
Printed Date: May 10, 2024 at 7:07 AM

Topic: Relay wiring for multiple sirens

Posted By: truck0385
Subject: Relay wiring for multiple sirens
Date Posted: July 08, 2004 at 10:16 PM

Hi, I am trying to hook up 3 sirens and there is a problem. I bought a 20/30 amp spdt Relay from best buy and I am not sure what fuse to put into the constant wire. It keeps blowing with a 15 amp fuse, but i am not sure if it is safe to put in a bigger fuse.

Replies:

Posted By: truck0385
Date Posted: July 09, 2004 at 7:45 AM

I connected 87 to constant 12 volts fused with a 15 amp, 86 to chassis ground, 85 from alarm output siren wire (+), 30 to the additional sirens, and 87a is not used.

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