can’t get door locks to actuate

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=75081
Printed Date: May 12, 2025 at 1:42 AM

Topic: can’t get door locks to actuate

Posted By: mjuevos
Subject: can’t get door locks to actuate
Date Posted: March 25, 2006 at 3:40 PM

hello,

im trying to install my clifford alarm. the only problem is that i can't get the door locks to actuate.

- when i put a makita battery to the door locks (both doors) they work fine, lock and unlock.

- when i measure voltage coming out of the clifford ECU i get +12 volts and -12 volts as i arm and disarm the alarm

- as soon as i hook up the wires from the clifford unit to the door locks, the voltage drops to 1 or 2 volts

- checked all door lock wires to ground, NO continuity, NO short to ground

what the freak is going on? can someboday help me?

Replies:

Posted By: Twelvoltz
Date Posted: March 25, 2006 at 4:01 PM

Make/Model and Year of car please.

Posted By: mjuevos
Date Posted: March 25, 2006 at 4:13 PM

vehicle - '97 toyota tacoma (it actually didn't even have pwr door locks, i installed some aftermarket door lock motors)

Posted By: Twelvoltz
Date Posted: March 25, 2006 at 4:30 PM

Did you wire them like what is on this page? The output from the clifford alarm is more than likely just a trigger output. Most, if not all DEI units provide an alternating output for doorlocks, but these outputs are not nearly enough power to control actuators. They are only strong enough to activate relays.

Posted By: xscash
Date Posted: March 25, 2006 at 5:04 PM

set your relays as twelvoltz said...5 wire reversal.. the alarm is only a trigger.

Posted By: mjuevos
Date Posted: March 26, 2006 at 5:54 PM

thanks guys for your help. i will try the relay route. i guess my question now is where can i get the relays and what kind is neede!d? will radioshack have what i need?

thanks again

Posted By: feenal
Date Posted: March 26, 2006 at 6:54 PM

you'll pay a fortune at radio shack the probably won't have the harnesses...try your local car audio shops