aftermarket door lock with car alarm help

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=736
Printed Date: July 15, 2025 at 8:38 PM

Topic: aftermarket door lock with car alarm help

Posted By: ivansilver
Subject: aftermarket door lock with car alarm help
Date Posted: May 12, 2002 at 10:17 PM

Anyone can help me to resolve my problem?

I have “Excalibur 1400 gold Car Alarm” installed in my car and “Spal” aftermarket central door lock system.

I can’t get my alarm to lock and unlock doors when armed or disarmed.

The lock system has two negative inputs and alarm have one negative and one positive output.

I don’t know what to do can anybody tell me what I need to get it work.

Replies:

Posted By: naughtydog
Date Posted: May 13, 2002 at 1:47 AM

Why dont you convert the positive output via a SPDT relay and then trigger the central locking kit with 2 negatives.

• Connect teminals 30 & 85 to ground.
• Connect terminal 86 to the positive cdl output of your alarm
• Connect terminal 87 to the negative trigger on the cdl kit.

Naughtydog

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