[s-cars] Daytime running light info needed (Canadian DRL)

Dave Ellis UrS4 at sympatico.ca
Wed Feb 16 22:03:53 EST 2005


Lee Levitt wrote:

>Dave,
>
>I thought there was a DRL relay that you can pull. Then all you have to do
>is to run switched power to the fog light switch or do the relay jumper
>(both recently discussed).
>
>BTW, what's the HIR bulb? I didn't see it listed on Daniel's site.
>
>Lee
>  
>
Hi Lee,

The HIR lamps are a modified variant of the 9007/9006 type bulbs with an 
added infra-red reflective coating on the inside of the bulb.  The idea 
is visible light exits the bulb, but a good deal of the infra-red (heat) 
generated is reflected back onto the filament making it glow hotter, 
generating brighter, whiter light for the same input wattage/voltage. 

More info is available here:

  http://forums.audiworld.com/s4s6/msgs/25556.phtml

-Dave
'93 S4
'99.5 A4 1.8t




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