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Old 08-08-2018, 12:39 AM   #1
ThermiteBasedToys
 
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Default How to turn on fog lights whenever.

Hey guys, I have the OEM switch and harness to some fog lights I just put on, they're all wired up and working but I noticed that my fog switch won't power on unless my headlights are turned on all the way. I'm kinda ignorant on electrical stuff but is it possible to make it that I can just switch on my fogs whenever I want without my headlights being on?
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Old 08-08-2018, 01:10 AM   #2
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Yup, front right headlight should have a vampire connection, denotes it has power and allows fog lights to come on.

Wire that to accessories switch (or harness there of) and then it will provide one of two required power sources for your relay when you turn the truck on, allowing you to turn ON the foglights by switch..

In some states it is illegal, hence it should be on the LOW beam, which turns the fog lights off on high beams. I wired mine exactly as Nissan suggested for that legal reason....
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Old 08-08-2018, 03:31 AM   #3
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In most states it is illegal to run with high beams and those who use them when it is not foggy need to be flogged. Cant count how many people run around here with their fog lights on all the time. Blinds the piss out of everyone as fog lights do not follow the same beam pattern and positioning as headlights.
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Old 11-06-2018, 10:35 PM   #4
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I just installed a light bar on mine and hooked it up to the fog light power source after swapping it to power on with the brights not the low beams. Anyways on the passenger side head light wire harness right behind the bulb there is a purple wire tied into the low beam power, you could cut that purple wire and connect it to a constant 12v power supply and just use the switch in your truck to turn them on and off.
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Old 11-06-2018, 11:29 PM   #5
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My Mercedes can run the fogs on low or high beam. The Lexus cancels the fogs when the high beams are being used.
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Old 11-07-2018, 12:57 AM   #6
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Yup, just as Scott said. I also have my Nissan fogs and switch wired so I can run them anyway I want. I stole switched power from cig lighter during my install. If you have the Nissan harness, look for the purple wire. That's the switched power lead. After you unhook from headlight piggy back, it should be easy to pull thru and tag the cig lighter for power.
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Old 11-10-2018, 04:21 PM   #7
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I wired my fog light switch through the parking lamp pin on the harness.
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