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wiring fog lites

Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=101971
Printed Date: July 12, 2025 at 8:22 PM


Topic: wiring fog lites

Posted By: igneous
Subject: wiring fog lites
Date Posted: February 07, 2008 at 11:03 AM

Just bought used '07 Altima and previous owner has fogs installed, and wiring has been added, but ain't  finished.  There is a power lead going from battery to fusible link to relay.  (I think it's some type of relay --says SchulZ on top)  The 2 open  ends are wire nutted (one is a large gauge wire, the other is small ga.).  The wires coming off the relay? are spliced into the headlight or parklight wire.  Anyway, I turned on lights last nite and touched the large wire to frame and fogs came on, so I assume thats the ground?  If all I need to do is find a ground on the chassis, I'll do that but what about the small wire??  I want to avoid a situation that drains the battery.  Thanks for any input




Replies:

Posted By: tedmond
Date Posted: February 07, 2008 at 7:24 PM

this is how it should be wired. using the headlight, that will trigger the relay which will turn on the power for fogs

85- negative trigger from headlight.
86- constant 12v (+)
87- constant 12v fused (+)
30 - to postive (red) wire on fog lights

those numbers are written on the bottom of the relay.





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