90 suburban door locks!!!!
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=10073
Printed Date: August 17, 2025 at 8:25 PM
Topic: 90 suburban door locks!!!!
Posted By: dalton316
Subject: 90 suburban door locks!!!!
Date Posted: February 25, 2003 at 5:15 PM
i put in an keyless entry and remote start on my 90 suburban and i got 2-5 pin relays for the locks but i am not for sure how to wire them up...please help!!!!!!!
Replies:
Posted By: camino
Date Posted: February 25, 2003 at 5:52 PM
if your alarm has a negtive output for the lock and unlock,you have to make it positive for your suburban.
for lock you need to send (+)to the lt.blue wire in the door harness.
for unlock you need to send (+)to the BLACK/ white wire in the door harness.
for that do the following:
for lock
#85 to 12v constant
#86 to negative lock pulse from the alarm
#30 to 12v constant
#87 lock positive output to the lt.blue wire.
for unlock
#85 to 12v constant
#86 to negative unlock pulse from the alarm
#30 to 12v constant
#87 unlock positive output to the BLACK/ white wire.
check double check your wires and conections,or the fire will let you know something is wrong.
Posted By: csorb
Date Posted: February 25, 2003 at 9:53 PM
You may not need relays at all. If your alarm already has low positive output(as many systems do), you can go straight to the light blue, and black which are positive trigger wires that already go to relays.
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