foglight relay

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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=82120
Printed Date: July 06, 2025 at 11:59 PM

Topic: foglight relay

Posted By: playtilithrtz
Subject: foglight relay
Date Posted: August 27, 2006 at 1:12 PM

95 GMC Jimmy 4wd.

I bought some foglights for this car, and instead of using the switch i want to hook it up to my headlights so that they turn on when i turn on/off with the switch inside the vehicle. Now i know this:

30 12V fused
85 ground
86 from switch hooked to low beam
87 to fogs

But on 87, i dont know where to connect it to the fogs. I got the 4 wires (+/-) going to the fogs, the other wires to power and ground, and then i have another set of wires which where supposed to go to a swtich. But now they should go to a relay. Can some one tell me where to connect these wires. I just can figure it out. Thanx in advance.

Replies:

Posted By: hotwaterwizard
Date Posted: August 27, 2006 at 2:36 PM

posted_image

Instead of hooking this circuit to the Key switch as noted just tie the wire into your headlight circuit.

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: playtilithrtz
Date Posted: August 27, 2006 at 2:42 PM

okay dumb question... but where is the key switch. for that matter what is it?

Posted By: hotwaterwizard
Date Posted: August 27, 2006 at 2:45 PM

The key switch is the switch in the car that starts the engine.

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

Posted By: hotwaterwizard
Date Posted: August 27, 2006 at 2:49 PM

You usually find a circuit on the fuse panel that has power when the key is turned on and tie the wire in to that fuse.

For the Headlight circuit you would find a fuse that is on only when the headlights are on and tie into that circuit. Sometimes you will get lucky and find a fuse that sayes Fog Lamps and your car will not have them and you can use that fuse.

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !