[s-cars] seat heater switch bulbs

[Fred Munro]

Hi Ivan;

I used the 3 mm ultra bright red LEDs from the ashtray illumination off an
A4. The LEDs parts numbers I mentioned in my write-up were used and
suggested by another lister; I didn't try them myself but included the
information because others were asking where to get LEDs. The LEDs I used
are as just bright as the lights in the other switches. Kevin's info sounds
about right; you need 3mm to fit the holder and 3000 mcd is plenty bright
enough.

Fred Munro
'94 S4


-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com]On Behalf Of Ivan Demkovitch
Sent: December 14, 2005 10:49 AM
To: kday at ultrameta.org
Cc: s-car-list at audifans.com
Subject: Re: [s-cars] seat heater switch bulbs


Hm.. I had those LED's that Fred mentioned in his write-up and they wasn't
bright enough for me.

Tried LED with resistor from RadioShack and it was even darker.

Where did you get those LED's ?

>From: Kevin Day <kday at ultrameta.org>
>To: Ivan Demkovitch <idemkovitch at hotmail.com>
>CC: s-car-list at audifans.com
>Subject: Re: [s-cars] seat heater switch bulbs
>Date: Wed, 14 Dec 2005 10:33:26 -0500
>
>On Wed, Dec 14, 2005 at 09:04:29AM -0600, Ivan Demkovitch wrote:
> > However I suggest to use bulb. I mail-ordered ultra-bright 12V LED's and
> > used foil "reflectors" and that was not enough light. Switches were
>darker
> > then other lighted buttons.
>
>I had excellent results with LEDs, but any old red LED will not
>necessarily work well.
>
>I used LEDs of 3mm size, 3000mcd brightness, and 640nm peak wavelength.
>I forget the series resistor value, but it was, as I recall, on the
>order of 3k ohms.  (3000mcd is pretty bright.)
>
>-Kevin
>


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