5 wire door lock acuators and relays

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=137886
Printed Date: April 25, 2024 at 11:40 AM

Topic: 5 wire door lock acuators and relays

Posted By: shafferny
Subject: 5 wire door lock acuators and relays
Date Posted: December 06, 2014 at 5:16 PM

Thinking about adding power door lock to my wife's '09 Wrangler at some point in the future. I might go with a Spal kit, however, I was also thinking about just picking up three 5 wire door lock actuators and wiring up a couple relays like this. Anybody see a reason this diagram wouldn't work? FWIW, I couldn't find a diagram like this in the relays seciton.

Thanks

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Replies:

Posted By: Ween
Date Posted: December 06, 2014 at 8:50 PM

Hi,
The lock and unlock signals are switches at the lock and unlock positions of the actuator. If they are to be interfaced to relays, they need to be converted to a momentary pulse. The diagram you show will force the actuator via the relay to a lock or unlock condition, eventually burning up the actuator. This could also jam the door latch and possible drain the battery. The Spal kits usually include an interface relay that does the pulse conversion.
Mark

Posted By: shafferny
Date Posted: December 07, 2014 at 1:23 AM

Okay, I wasn't sure how that worked. So the actuators actually send a (-) latched signal to the controller, which then pulses the motors to lock or unlock respectively. I couldn't tell by looking at the Spal diagram. The instructions tell you to simply tie the alarm signal wires into the actuator signal wires. Thanks for the clarification on that!

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