Still need some 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=11385
Printed Date: September 05, 2025 at 8:00 PM
Topic: Still need some alarm help
Posted By: RaveChild
Subject: Still need some alarm help
Date Posted: March 24, 2003 at 5:06 PM
I have recently installed an Autopage RS-750 in my 1996 Sunfire GT but I am still having some problems with a couple of connections. 1 - The wire for the dome light. Where do I connect this so that the light comes on when I disarm the alarm? Do I need a relay to connect it? If so how do I wire the relay?? 2 - The wire for the trunk switch. According to the wiring diagram for my car, I should tap into the black wire for the trunk light. Both of the wires for the light are black. One shows 0 volts at all times, the other shows 12 volts when the light is on. Which one do I tap into? Do I need a relay for this? If so how do I wire it?? Thanks in advance for any help!
Replies:
Posted By: cool_greg
Date Posted: March 24, 2003 at 5:30 PM
1 - Yes use a relay, check the dome light, it should be negative switched. Use a relay to switch the appropate wire to ground.
2 - No you don't need a relay, Use the wire that shows 12volts when the light is on, make sure you hook it up to a +12v input to the alarm as the auto page alarms usually have several inputs, some neg switched, some postive switched.
Greg
Posted By: RaveChild
Date Posted: March 25, 2003 at 2:07 PM
do you have a diagram on how to wire the relay??
Posted By: cool_greg
Date Posted: March 25, 2003 at 4:00 PM
if the dome light is negative switched...
on the relay
pin 30 goes to ground, pin 87 goes to the dome light wire
pin 85 goes to +12v via a fuse, or hook it up between the fuse and the alarm on the autopoge 750.
pin 86 goes to the domelight supervision connection from the alarm - white wire #H5 pin white connector I think, but check
if the dome light is postive switched... (not the normal)
on the relay
pin 30 goes to +12v, pin 87 goes to the dome light wire
pin 85 goes to +12v via a fuse, or hook it up between the fuse and the alarm on the autopoge 750.
pin 86 goes to the domelight supervision connection from the alarm - white wire #H5 pin white connector I think, but check.
I hope that helps, the install manual should show a diagram.
Greg
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