Bill,
It's not the color but the pattern. A fog light has a sharp cutoff so you
look down into the light so the light doesn't bounce into your face when it
reflects off the fog/water droplets.
Yellow reduces contrast and gives the appearance of better vision in fog.
Mike
----- Original Message -----
From: "Bill Barber" <birukun@san.rr.com>
Cc: <datsun-roadsters@autox.team.net>
Sent: Monday, January 08, 2001 7:58 PM
Subject: Re: Fog Lights
> I was under the impression that the frequency of yellow light made it less
> prone to reflect off of the fog. Fog is white, so any white light that
hits
> it will reflect back. Yellow, or any other color (purple?) will pass
> through or only reflect back the same frequency in the spectrum.
>
> Yellow may be the brightest non-white color. Red and Blue are reserved
> exclusively for emergency vehicles. Purple is just cool looking, with no
> positive effect.
>
> Bill Barber
> SRL311-09363 (If my car ever saw the light of day I could try different
> colored bulbs)
> NOROC
>
>
> ----- Original Message -----
> From: "Gary McCormick" <svgkm@halley.ca.essd.northgrum.com>
> To: "Daniel Beatty" <daniel_beatty@hotmail.com>
> Cc: <datsun-roadsters@autox.team.net>
> Sent: Monday, January 08, 2001 4:29 PM
> Subject: Re: Fog Lights
>
>
> Bosch Automotive Handbook, 2nd Edition; pg. 587: "Most fog lamps produce
> white light.
> There is no physiologically justifiable advantages in yellow light."
>
> At most, I'd say that the reduced intensity of the beam from a yellow lamp
> results in
> reduced glare compared to the same bulb if it weren't filtered through a
> yellow lens, but
> the effect is the result of a reduction in the amount of light going out,
> not from the
> color.
>
> Daniel Beatty wrote:
>
> > Gary,
> >
> > Your comment concerning white vs amber/yellow is contrary to many
people's
> > and manufacturer's beliefs. Please explain.
> >
> > Daniel Beatty
> > 65 1600 Hella/PIAA 90/130(amber lows/white highs) & 130 watt drivers
> > 70 DATTO wagon Hella/PIAA 80/110 (amber low/white high) & 100 highs
> > "never enough candlewatts on a twisted, wet night."
> >
> > ----Original Message Follows----
> > From: "datsunmike" <datsunmike@nyc.rr.com>
> > Reply-To: "datsunmike" <datsunmike@nyc.rr.com>
> > To: "Gary McCormick" <svgkm@halley.ca.essd.northgrum.com>,
> > <Fred_Katz@ci.sf.ca.us>
> > CC: <datsun-roadsters@autox.team.net>
> > Subject: Re: Fog Lights
> > Date: Mon, 8 Jan 2001 16:35:00 -0500
> >
> > Gary,
> >
> > But they look cool and you can actually see that they are working!!!!!!
> >
> > Mike
> >
> > ----- Original Message -----
> > From: "Gary McCormick" <svgkm@halley.ca.essd.northgrum.com>
> > To: <Fred_Katz@ci.sf.ca.us>
> > Cc: <datsun-roadsters@autox.team.net>
> > Sent: Monday, January 08, 2001 3:36 PM
> > Subject: Re: Fog Lights
> >
> > > The amber lenses do nothing to increase the effectiveness of the lamp
> in
> > fog. You are
> > > better off with a good bright white lamp with a sharp top cutoff,
> > properly
> > aimed.
> > >
> > > Gary McCormick
> > > San Jose, CA
> > >
> > > Fred_Katz@ci.sf.ca.us wrote:
> > >
> > > > Bob,
> > > >
> > > > I have the JC Whitless fog lamps on my '70 1600. Cost was under $30
> > > > including 2 lamps and the relay. Extremely easy to install and
hookup
> > to
> > > > run off the existing dash control knob. At the time I bought them 2
> > years
> > > > ago they were $24 or $25 but might cost more now. Mine are amber
> lenses
> > > > (real foglamps, not driving lights).
> > > >
> > > > Fred - So.SF
> > > >
> > > > _________________________ Reply Separator
___________________________
> > > > Subject: RE: Fog Lights
> > > > Author: bob_wilson@agilent.com
> > > > Date: 1/8/2001 8:37 AM
> > > >
> > > > Do these fog lights help out much? Do many of you listees have fog
> > lights?
> > > > I live in the Santa Cruz mountains and every Fall (especially in
> > November)
> > > > the fog gets thick sometimes and I would like some good fog lights.
> > Just
> > > > wondered if there are some good recomendations on lights that might
> fit
> > into
> > > > the two holes in front. I have a '70 1600.
> > > >
> > > > Bob Wilson s/n 28383
> > > >
> > > > -----Original Message-----
> > > > From: Fred Davidson [mailto:fred.davidson@sympatico.ca]
> > > > Sent: Sunday, January 07, 2001 9:56 AM
> > > > To: R Haug
> > > > Cc: datsun-roadsters@autox.team.net
> > > > Subject: Re: Fog Lights
> > > >
> > > >
> > > > R Haug wrote:
> > > > >
> > > > > Hello everyone,
> > > > > I would like to thank all of the people who have helped with info
> the
> > > > > past year.
> > > > > Hope the next year will bring my roadster into the driving stage.
> > > > > I am getting a photo point site up soon so you can at least see
my
> > > > > chassis.
> > > > >
> > > > > I would like to know how to tell if I have the original fog
lights
> > for
> > > > > the roadster.
> > > > > Are there any markings on the metal body/housing or on the
lenses.
> > My
> > > > > lenses are yellow.
> > > > > Bob
> > > > > 67.5 x 2
> > > > > Moscow
> > > >
> > > > Bob:
> > > >
> > > > Regarding your original fog lamp question. I have a set NOS in
Nissan
> > > > boxes. The lens size is 5 1/4", the whole front is glass, the lens
> has
> > a
> > > > script E W in the centre, fog lens with yellow bulb , the mount is
> > > > attached to the lens case by 4 rivets on the back, all chrome, two
> > wires
> > > > (red with blue stripe & black), part #26150-09401.
> > > >
> > > > Hope this helps!
> > > >
> > > > Fred
> > > > '69 2000 solex SRL31112932
> >
> > _________________________________________________________________
> > Get your FREE download of MSN Explorer at http://explorer.msn.com
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