CH 2 to turn on foglights?

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=48279
Printed Date: July 05, 2025 at 8:09 AM

Topic: CH 2 to turn on foglights?

Posted By: 90CiViCSiR
Subject: CH 2 to turn on foglights?
Date Posted: January 21, 2005 at 8:27 PM

how would I go about this?? Is there a way to do this with a relay?? Thanks in advance!

Replies:

Posted By: Jschult3
Date Posted: January 21, 2005 at 8:58 PM

You should be able to. You'll need to find the wire that powers up the fogs and connect a relay.

The only problem you may run into is that the car probably requires the fogs to suply power to the fogs. It may be more trouble than it's worth. Would be easier to connect your headlights than the fogs. If it's aftermarket fogs you should be able to do pretty easy. If their factory it's prob not worth the effort unless you've got lots of time on your hands.

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Jeff
Always Verify Wire information before Connecting! Just a Darn Good DIY'R

Posted By: 90CiViCSiR
Date Posted: January 21, 2005 at 9:03 PM

yea, I'm just wondering how I should hook up the relay ... just so that CH2 hits +12V

Posted By: Jschult3
Date Posted: January 21, 2005 at 9:12 PM

Wire it up like this, assuming you found a +12 volts wire when you used your DMM.

If it was a negative wire connect pin 30 to chassis ground.

85= +12volts

86= Trunk/channel 2 wire from alarm system( should be -12 volts approx 200ma )

30= +12 Volts constant

87= Fog light wire you probed.

87A= Not used.

Same as the relay below.

Good Luck

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Jeff
Always Verify Wire information before Connecting! Just a Darn Good DIY'R

Posted By: Jschult3
Date Posted: January 21, 2005 at 9:12 PM

Wire it up like this, assuming you found a +12 volts wire when you used your DMM.

If it was a negative wire connect pin 30 to chassis ground.

85= +12volts

86= Trunk/channel 2 wire from alarm system( should be -12 volts approx 200ma )

30= +12 Volts constant

87= Fog light wire you probed.

87A= Not used.

Same as the relay below.

Good Luck

-------------
Jeff
Always Verify Wire information before Connecting! Just a Darn Good DIY'R

Posted By: swamprat323
Date Posted: January 21, 2005 at 9:18 PM

depending on your alarm. may have to reprogram, that is it can be done, most ch 2 only stay on while the button is being pushed. most dei can use ch 3 or 4 and change the progam so it stay on for a lenght of time or unilt u hit the button again. what ckind of alarm do you have?

Posted By: Jschult3
Date Posted: January 22, 2005 at 7:58 PM

Good call swamp rat, I forgot to mention that way he'd have to hold the button to keep 'em on.

Otherewise look at the relay section and build the relay pack to convert momentary to continuous. click herehttp: //www.the12volt.com/relays/relays.asp

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Jeff
Always Verify Wire information before Connecting! Just a Darn Good DIY'R