adding doorlock switch to added doorlocks
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=28510
Printed Date: May 13, 2025 at 3:59 AM
Topic: adding doorlock switch to added doorlocks
Posted By: downsouthplaya
Subject: adding doorlock switch to added doorlocks
Date Posted: March 16, 2004 at 7:31 PM
i put on aftermarket doorlocks on my 89 caprice, they work fine with the alarm, but i want to install a switch in the car that will let me operate the doorlocks from inside, like the standard doorlock switch. I was told I need an insane number of relays, or the factory doorlock relay. I have both, but i cant figure out the installation on this, to make them work with the switch and alarm, the alarm is a rattler300 by the way, any help on this would be appreciated
Replies:
Posted By: its_radio_shop
Date Posted: March 16, 2004 at 7:47 PM
What kind of switch(s) do you have? momentary-off-momentary (like OEM door lock switch) or maybe a couple momentary pushbuttons? (one for lock one for unlock) and does your alarm have built in door lock relays or did you put the relays in yourself? If you have external relays it could be really easy.
Posted By: downsouthplaya
Date Posted: March 16, 2004 at 7:54 PM
its_radio_shop wrote:
What kind of switch(s) do you have? momentary-off-momentary (like OEM door lock switch) or maybe a couple momentary pushbuttons? (one for lock one for unlock) and does your alarm have built in door lock relays or did you put the relays in yourself? If you have external relays it could be really easy.
OEM doorlock switch, and the alarm has built in doorlock relays...
Posted By: its_radio_shop
Date Posted: March 16, 2004 at 8:03 PM
ok, one more thing. Does your OEM doorlock switch have 6 terminals on the back? Something like this... O O - Momentary O O - Common O O -Momentary
Posted By: downsouthplaya
Date Posted: March 16, 2004 at 8:08 PM
its_radio_shop wrote:
ok, one more thing. Does your OEM doorlock switch have 6 terminals on the back? Something like this... O O - Momentary O O - Common O O -Momentary
it has 3
Posted By: downsouthplaya
Date Posted: March 16, 2004 at 8:32 PM
i have this doorlock relay and these actuators 
Posted By: its_radio_shop
Date Posted: March 16, 2004 at 8:39 PM
ok, you will need 2 relays. Connect the positive lead from door lock motor(s) to pin 30 on relay #1. Connect the negative lead from door lock motor(s) to pin 30 on relay #2. Connect pins 86 & 87 on both relays to +12V (be sure to fuse it. Try 10 amps) Connect pin 87A to ground on both relays. Connect Lock side of momentary switch to pin 85 on relay #2. Connect Unlock side of momentary switch to pin 85 on relay #1. Connect the common pin of momentary switch to ground. If the door locks work in reverse switch the momentary outputs on the back of the switch around. If the 10 amp fuse pops try a 15 but i would not go any higher. I am not sure of the exact current draw on your motors but 15 amps should do both motors without a problem. Also try to make the connection at the same place your alarm lock outputs tie into the door lock motors. If you want to add another switch just hook the momentary outputs from the switch to pins 85 on both relays like you did the first switch. Connect the common from the switch to ground as well. If you need a diagram let me know and I will see what I can do. Hope this helps.
Posted By: its_radio_shop
Date Posted: March 16, 2004 at 8:43 PM
Not sure of the configuration of the relay in your picture. The instructions I posted are using a standard relay used in almost all automotive installation. I would be willing to bet some install shop in your area would probably give you a couple. If not they are not more than a few bucks each.
Posted By: downsouthplaya
Date Posted: March 16, 2004 at 8:48 PM
thanks for the help, with that setup my doorlocks should still work with the alarm right?
Posted By: its_radio_shop
Date Posted: March 16, 2004 at 9:05 PM
Yea they will. Did some looking at the door lock diagrams on this page and found one that is exactly what I described. Just take the wires from the relays that are shown to go to "alarm unlock output" and the "alarm lock output" and run those instead to the momentary side of the switch. One wire to each terminal. Then ground the common pin of the switch. heres the link. Its the actuators reverse polarity diagram. You will just be using a switch rather than alarm outputs to trigger the relays :) https://www.the12volt.com/doorlocks/page3.asp#arp
Posted By: its_radio_shop
Date Posted: March 16, 2004 at 9:13 PM
Damn, looked at the diagram again. No it wont work like this with your alarm setup unless you attach your alarms door lock outputs to this external relay system as well. You just wont be using your internal relays is all. Attach the door lock outputs from alarm to the specified points on that diagram ALONG WITH the switch outputs.
Posted By: downsouthplaya
Date Posted: March 16, 2004 at 9:17 PM
i think im just going to return the factory door lock relay and use standard relays...
Posted By: its_radio_shop
Date Posted: March 16, 2004 at 9:23 PM
Email me at mikelin4@hotmail.com if you need any more help with it once you get the relays.
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