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Old 03-13-2015, 12:43 PM
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Using fog lights with high beams on

Found this site showing how to modify the relay so you can use your fogs with both high and low beams. http://tmar.net/fog_lights.htm

Does anyone know if this applys for 2015's too. My Willys is still being built so I can't actually look for myself. If not, does anyone know how to make this mod happen.

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Old 03-13-2015, 01:04 PM   #2
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Notice that the link you posted is for pre-JK models so this method might not work because of canbus. On the other hand you can likely do this with a flashcal

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Old 03-14-2015, 05:17 PM   #3
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Using fog lights with high beams defeats the purpose of the fog lights. Using high beams with driving lights makes more sense.
In fog, rain or snow, fog lights improve vision and light up the sides of the travelled lane. High beams reflect the light back to the driver.
High beams and driving lights.......now that's a bright setup.
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Old 03-14-2015, 06:11 PM
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Sorry, I meant high's with the factory driving lights. I want to be able to run them at the same time.
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Old 03-14-2015, 06:21 PM   #5
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With the Flashpaq 3872 you can make your fogs stay on with the high beams.
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Old 03-15-2015, 10:14 PM   #6
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IF your dealer will do it, there is an "export" mode for lighting. I had it done on the Magnum and Nitro that I had before. It's a US thing where it is disabled.
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Old 03-16-2015, 08:55 AM   #7
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IF your dealer will do it, there is an "export" mode for lighting. I had it done on the Magnum and Nitro that I had before. It's a US thing where it is disabled.
I doubt any US dealer will enable it. It is illegal to have fog/driving lights on with the high beams.
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Old 03-16-2015, 09:59 AM   #8
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What is flashpaq3872
I have an '07 and would really like to do use fog and highs
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Old 03-16-2015, 10:12 AM   #9
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What is flashpaq3872
I have an '07 and would really like to do use fog and highs
The Flashpaq 3872 is a programmer sold by Superchips for modifying the vehicles programming. It has many uses other than just engine performance.
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Old 08-09-2016, 07:18 PM   #10
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How do you alter your fuse to allow high beams and fog lights to shine together?
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Old 08-09-2016, 07:41 PM   #11
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I'd have to go look at it to be sure, but on my Silverado you just run a diode from the control pin of the high beam relay to the control pin on the fog lamp relay in the box. Bias the diode so that voltage only travels from hi--->fog so your fog lights will come on with your high beams, but you can still use your fog lights only when needed.
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Old 08-10-2016, 06:48 AM   #12
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Sorry, I meant high's with the factory driving lights. I want to be able to run them at the same time.
In PA you can run fog lights with running lights and/or low beams only, and you can run driving lights with high beams only. That will allow the vehicle to pass inspection. The factory lights that are on the Jeep are fog lights, I don't know of any manufacturers that put driving lights on vehicles. As Vt Rider said, they have 2 different uses and running driving lights with low beams or fog lights with high beams is defeating their purpose.

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