[KB] Turning fog lights on indepent of headlights

[bobc]

The stock Prius (2004-2005) does not allow for the fog lamps to be turned out without the headlights being on.

There's been a lot of discussion on this site on how to get around this. Several posters have found ways to do this. I recently was able to perform this modification using only a diode and two wire connectors without having to disconnect the junction box to access the requisite wries. And, this modification is completely reversible. This may be the latest refinement in the techniques posted to date.

I posted the process in the Knowledge Base section of this site.

Please comment as you perform the modification to further refine the technique.

Cheers,

-bob

[BMcGraw]

Nevermind Bob. I thought I knew the answer anyway. Went ahead and used the 1N4005. Worked like a charm. I'm now the happy owner of a 2nd Gen Prius WITH DRL's! Thanks again....

Bob McGraw
Buena Park, CA

[bmwquickspeed]

I realize this is a old post but I am looking for the knowledge base article on Turning fog lights on indepent of headlights.

Does anybody have it or a link to it. I have done multiple searches and all the links I can find are dead and the Knowledge base is pretty empty.

Thanks,

[Tideland Prius]

Hmm... yeah we gotta figure out what happened to the KB.. it basically went bust when we switched to the new server and Danny's been really really busy (new job, marriage etc). Hopefully someone can upload the pdf again. (I think it was a pdf)

[qbee42]

<div class='quotetop'>QUOTE(bmwquickspeed @ Aug 14 2007, 01:15 PM) [snapback]495418[/snapback]</div>

I realize this is a old post but I am looking for the knowledge base article on Turning fog lights on indepent of headlights.

Does anybody have it or a link to it. I have done multiple searches and all the links I can find are dead and the Knowledge base is pretty empty.

Thanks,
[/b]

Keep in mind that fog lights cannot be legally used without headlamps in many states.

Tom

[bmwquickspeed]

You would be surprized what you can get away with in Arizona. If it is a law here it is not inforced.

There are times when it is not dark enough that I want to turn on my headlights but I would like the extra light so that other cars can easiliy see me without turning on my HID and wasting part of their life cycle.

I have no intention of using them as night time driving lights. Mainly just for overcast days and in stormy weather where the lights are not nessisary just a little added safety.

[jweale]

<div class='quotetop'>QUOTE(qbee42 @ Aug 14 2007, 11:08 PM) [snapback]495865[/snapback]</div>

Keep in mind that fog lights cannot be legally used without headlamps in many states.

Tom
[/b]

This is odd - I was always taught that if you were using foglights you wanted the main headlights off, since the higher mounted lights would just reflect back and reduce your vision. The point of fog lights was that they were mounted low and aimed low so that they were less scattered by the fog. Running the main lights with the foglights would defeat the purpose, with their glare washing out any foglight benefits. Perhaps the lack of real fog lights on modern cars has made it a moot point?

[Afrikanych]

<div class='quotetop'>QUOTE(bobc @ May 11 2005, 08:11 AM) [snapback]88529[/snapback]</div>

The stock Prius (2004-2005) does not allow for the fog lamps to be turned out without the headlights being on.
There's been a lot of discussion on this site on how to get around this. Several posters have found ways to do this. I recently was able to perform this modification using only a diode and two wire connectors without having to disconnect the junction box to access the requisite wries. And, this modification is completely reversible. This may be the latest refinement in the techniques posted to date.
I posted the process in the Knowledge Base section of this site.
Please comment as you perform the modification to further refine the technique.
Cheers,
-bob
[/b]

I could not find how to do this. Could you explain to me
tell. I would make this modification.

I am sorry for his English.
Thank you.

[qbee42]

<div class='quotetop'>QUOTE(jweale @ Aug 16 2007, 10:50 AM) [snapback]496866[/snapback]</div>

This is odd - I was always taught that if you were using foglights you wanted the main headlights off, since the higher mounted lights would just reflect back and reduce your vision. The point of fog lights was that they were mounted low and aimed low so that they were less scattered by the fog. Running the main lights with the foglights would defeat the purpose, with their glare washing out any foglight benefits. Perhaps the lack of real fog lights on modern cars has made it a moot point?
[/b]

Yes, many laws are odd. Those laws are the reason Toyota makes it so that the fog lights can only be used with the headlamps.

Tom
]

[Afrikanych]

All thanks. Found himself.