Foglights on alarm aux
Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=54890
Printed Date: June 27, 2025 at 8:34 AM
Topic: Foglights on alarm aux
Posted By: nascarfreak88
Subject: Foglights on alarm aux
Date Posted: April 30, 2005 at 11:46 PM
My buddy picked up a pair of foglights that i installed today. It was a straight foreward install. Ran the switch from the dash to the little control box (i imagine its basically a relay inside of that box), then plug the lights into that little box. well, now he wants to use his aux terminal on his alarm to turn on the fog lights, and i'm not sure if i know what wires i need to plug into the relay. is this how it should go?- 85-gound 86-(+) aux terminal on alarm 30-fused battery link 87-positive foglight wires is that correct or should 85 and 86 be switched around???
Replies:
Posted By: Autoobsession
Date Posted: May 01, 2005 at 11:20 PM
Aux is prob gonna be a negative output. So 87 is gonna be your positive output to the foglight relay that will turn the lights on. 86 will go to the aux output of the alarm, and 86 along with 30 to 12v power.
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Posted By: Autoobsession
Date Posted: May 01, 2005 at 11:21 PM
Aux is prob gonna be a negative output. So 87 is gonna be your positive output to the foglight relay that will turn the lights on. 86 will go to the aux output of the alarm, and 85 along with 30 to 12v power.
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Posted By: Autoobsession
Date Posted: May 01, 2005 at 11:22 PM
Disregard the first post. -------------
Posted By: Captanham
Date Posted: May 02, 2005 at 2:36 AM
you know with this aux output you are only going to have them be on while you're holding the button, is that all you are going for or are you trying to have them stay on? if you want to do it a good way i'd get a dei pulse timer, this way you can hit the button once, and they will stay on for 30 seconds or so (you can change how long this is) ------------- Bad Boys Customs
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Posted By: nascarfreak88
Date Posted: May 02, 2005 at 2:51 PM
correct, i want them to say on.
Posted By: Captanham
Date Posted: May 02, 2005 at 3:38 PM
how do you want them to stay on? if you want them to stay on untill you hit the button again, you will have to do a latching / unlatching relay set up, https://www.the12volt.com/relays/page5.asp#lsp check that out,, if you want them to stay on for like a min or so after you hit it once, then look for a pulse timer ------------- Bad Boys Customs
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Posted By: nascarfreak88
Date Posted: May 02, 2005 at 3:45 PM
ok ive been looking into that DEI thing, and i think that is what we will go with, though now another question- can i run the power straight to the power wire on the foglights?? the setup he has is already remote controlled. they came with a little black box, and everything was a basic plug and play into that box. He then uses the supplied remote to turn them off and on. two problems- He now had two big 'ol remotes on his key chain, and the lights stay on untill pressed off. Plus there have been a few times the lights have come on becuse the buttons on the remote were pushed while in his pocket.
Posted By: nascarfreak88
Date Posted: May 02, 2005 at 3:52 PM
oops, just saw the post above- yeah i just want to hit the button once, and then have them time out. 1-90 seconds isnt all that long to wait for them to shut off. though if i was to use that setup in the link you posted, where would the timer go??
Posted By: nascarfreak88
Date Posted: May 02, 2005 at 3:56 PM
oops, just saw the post above- yeah i just want to hit the button once, and then have them time out. 1-90 seconds isnt all that long to wait for them to shut off. though if i was to use that setup in the link you posted, where would the timer go??
Posted By: Captanham
Date Posted: May 02, 2005 at 3:56 PM
if you use the timer you would not use the link i provided, it would just be the timer, to a power relay, and then hook that to the power of the lights,,, BUT if this already has a latched hook up, and you didn't NEED the 90 second thing, then you could just find the relays that came with the device, and diode everything and hook up your alarm to that, but i couldn't tell you how to do it without seeing a schematic,,, so i'd go with the timer probably ------------- Bad Boys Customs
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