Weirdness after LED installation
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Logistics Pro
Joined: Sep 2002
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From: Central KY
Weirdness after LED installation
Today we installed LED bulbs in my headlights and fog lights on the 2005 F-150. Everything works perfectly with the fog lights turned off. But when we switch the fog lights on it automatically kicks the headlights into high beam and will not allow low beam to be selected. That is extremely weird. It does that regardless of whether there are halogen or LED bulbs in the fog lights. The only way we can get the headlights to work normally is by keeping the fog lights turned off. Does anybody have any ideas why this is happening? By the way the LED bulbs that I'm using are high quality name brand bulbs that were very expensive.
5th Wheeling
Joined: Nov 2023
Posts: 37
Likes: 17
From: South East TN
having same problem with mine I have not found a solution yet it sucks I can run either one no problem but both goes straight to high beam I am thinking I may need add resistors to now the way you talk with driving lights doing this with halogens to I think the resistors need to go on low beams but again like you said its weird that they trigger high beams
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Logistics Pro
Joined: Sep 2002
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From: Central KY
I thought the Bambi mod was for newer trucks to allow the fog lights to stay on with the high beams and low beams both?
Lead Driver
Joined: Nov 2020
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From: Sportsman's Paradise
11-14 certain, <10, 15> uncertain. It allows you to use high beams with fog lights. Low beams should work regardless of fog light status.
Lead Driver
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From: Sportsman's Paradise
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Fleet Owner
Joined: Mar 2012
Posts: 26,211
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From: Near Cal. Avenue
Led's' screw a lot of stuff. I tried them as brake lights in my wife's car. Couldn't see the lights at mid-day with SOL's light when she braked.
Forget the stupidity. Your life is hanging on it.
Forget the stupidity. Your life is hanging on it.
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Fleet Mechanic
Joined: Oct 2007
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From: Raytown MO
The Bambi mod will fix the issue. I did it to my 2004 after installing LED headlight and foglight bulbs.
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Logistics Pro
Joined: Sep 2002
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From: Central KY
To update, I was uncertain that the "Bambi mod" would cure this, because that's a mod we do on the newer trucks to allow fogs to stay on with high beams. My issue on the old '05 is that I want to use LOW beams with fogs.
So, I called Headlight Revolution (the vendor I got the bulbs from) and they suggested a set of the GTR Lighting modules that plug in between the bulbs and truck harness. This seems to have totally cured the issue. Will take the truck out after dark tonight to be sure.
So, I called Headlight Revolution (the vendor I got the bulbs from) and they suggested a set of the GTR Lighting modules that plug in between the bulbs and truck harness. This seems to have totally cured the issue. Will take the truck out after dark tonight to be sure.
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