dome supervision

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=103344
Printed Date: July 15, 2025 at 3:29 AM

Topic: dome supervision

Posted By: louis2322
Subject: dome supervision
Date Posted: March 23, 2008 at 8:32 PM

I have a autopage 2 way rs727 i am installing in a 92 Ford Escort GT.

I want to have dome supervision, but dont know how i am to wire it. I was thinking of using the wire for the door switch to activate the dome when the relay energizes via the controller. My issue is that i want to have the neg door trigger input hooked into the alarm at the door switch, but am wondering if the dome turnon will screw with the trigger. Do i need to isolate the trigger and dome relay from each other and how would i place the cathode/anode in relation to each wire?

Thanks, Lou

Replies:

Posted By: tedmond
Date Posted: March 23, 2008 at 9:32 PM

you got a negative domelight trigger. use a relay and wire like so

85 - domelight wire from unit.
86 - constant 12v
87 - ground
30 - domelight wire on car (go to light) OR tag door pin

if i rememer, autopage units have selectable polarity for domelight. Also they can ignore door triggers for 45 seconds then will arm.

Posted By: louis2322
Date Posted: March 24, 2008 at 4:54 AM

tedmond wrote:

you got a negative domelight trigger. use a relay and wire like so
85 - domelight wire from unit.
86 - constant 12v
87 - ground
30 - domelight wire on car (go to light) OR tag door pin
if i rememer, autopage units have selectable polarity for domelight. Also they can ignore door triggers for 45 seconds then will arm.

OK, but when the alarm triggers, the dome will flash, wont that send a false signal to the door pin trigger and keep it going off?

Posted By: tedmond
Date Posted: March 24, 2008 at 10:07 AM

the domelight does NOT flash when the alarm wails - thats parking lights ONLY. the domelight will only come on when you DISARM your system. this will not false door triggers as you are only tagging the domelight.

Posted By: tedmond
Date Posted: March 24, 2008 at 10:11 AM

you can also do this method, same principal, but this for sure makes your domelight supervision work and without triggering the alarm(if it does happen)

85 - domelight wire from unit.
86 - constant 12v
87 - ground
87a - door pin wire on car (pin side)
30 - door pin or domelight wire on car (go to light) - tag the wire AFTER your door pin connection to the alarm

when the relay is energized, the connection is broken between 87a and 30. the new continuity is from 87 to 30. this will power your domelight only. but other method works as well.