Peter

Thanks all for responding..... I agree it designed
that way... thanks for pointing out the existance of
modification kits, I might do a conversion (if legal),
to obtain better close up illumination during hi-beam use.

Thanks again for responding....



On Fri, 05 Mar 2004 11:04:35 -0500, Peter <> wrote:

>Interesting piece of Trivia.
>
>I had a front halogen bulb going dim on the
>1990 Silhouette, which has a four bulb front system.
>(two outers, low beam....two inners high beam).
>
>Replaced the bulbs and started checking things out.
>
>At low beam the two outer lamps come on
>At high beam the two inner lamps come on (and the outer ones are off).
>
>It's a two wire system... each switch handles V+ to a different set of lamps.
>
>So, I checked three GM cars
>
>1990 Olds Silhouette Mini-Van
>1992 Chevy Lumina APV
>2002 Chevy Monte Carlo LS
>
>
>And, (believe it or not), on all cars, the low beam calls for
>one set of two lamps. The high beam calls only for the other
>set of two.
>
>otoh my friends 1994 Buick Regal uses a four lamp system and when
>using high beams all four lamps are lit !!!
>
>Why would GM use two different headlight systems???
>
>To convert this to a 4 light high beam system all I would
>need to do it jumper hot from the high beams to the low beams using
>a diode and quick connect coupler. Is this thinking correct ??
>
>Thanks !!!
>
>
>