On Mon, 24 Aug 1998 10:19:16 -0700 "Andrew Errington" <ame@synaptics.com>
writes:
>Hi,
>
>you won't be able to convert a driving lamp to a fog lamp.
I'll have to respectfully disagree with you here Andy,
The only difference in the vast majority of aftermarket for/driving
lamps, is the color and fluteing of the lens. Swapping the lens from a
fog lamp to a driving lamp is generally all that is required.
>Driving lamps are intended to be wired to be on with your high (or
>main)
>beam, and off with dipped headlights. The lens on the lamp is
>designed to
>throw a long bright 'spotlight' pattern.
True, but this is more a function of the wiring connection when
installed than a difference between fog and driving lamps.
On the 72 MGB, fog/driving lamps were an option, and the wiring
connections are shown in the Haynes manual wiring diagram. It would be no
more trouble to wire the aftermarket lights as per the original,
inserting relays where appropriate, in both the fog and driving lamps.
As originally wired, there was a three position switch (OFF - FOG -
DRIVING) inserted in the radio console which controled the aux. lamps. In
the "fog" positon, the power for the lamp was supplied by the dipped
(low) beam circuit, and in the "driving" position, power for the other
lamp was supplied by the high beam circuit. Thus if the "driving" light
was on ,with the head lamps on HI, when the heads were dipped, the
driving lamp was turned off. Likewise, the fog lamp, which was powered by
the low beam circuit would extinquish when the heads were switched to the
bright (high) position.
Rick Morrison
72 MGBGT
74 Midget
>Fog lamps are wired to be on with the side (or parking) lights. The
>lens is
>designed to create a very low, wide, diffuse light which is less
>likely to
>reflect back to you from the fog.
>
>If you drive in fog with main beams or driving lamps on you will light
>up
>the fog bank in front of you so well you won't be able to see
>anything.
>
>If you drive in clear weather with either driving lamps or fog lights
>on you
>will look like a sad loser who either a) doesn't know how to turn his
>lights
>on and off properly, or b) thinks it's really cool to be lit up like a
>Christmas tree and irritate the pants off everyone else. These points
>typically do not apply to MG owners.
>
>Have fun,
>
>Andy
>
>> -----Original Message-----
>> From: owner-mgs@autox.team.net [mailto:owner-mgs@autox.team.net]On
>> Behalf Of David Allen
>> Sent: Sunday, August 23, 1998 19:32
>> To: mgs@autox.team.net
>> Subject: Better lights or just slow down ?
>>
>>
>> Hi Listers: Anyone have a recommendation for fog lights ? I find
>> myself driving
>> through lots of mist in the Maine countryside. I have a set of Hella
>160
>> driving lights (not installed),maybe I can convert one to a fog
>light ?
>> Will adding six inch diameter lamps spoil the airflow to my radiator
>and
>> cause overheating-hot running ?
>>
>> TIA
>> Dave '70 MGBGT
>>
>>
>>
>>
>>
>
>
|