Re: [AMC-List] headlights

[Frank Swygert <farna@xxxxxxx>]

So I had it backwards. Thanks for the correction -- makes more sense to 
have the most light on high beam! 

On July 13, 2006 Jeff Reeves wrote:

> Incorrect!
> 
> A four-headlight system is designed to operate as follows (this is
true for all manufacturers I can think of):
> horizontal arrangement: two outer lamps are low/high beam and two
inner lamps are high beam only--this means that on low beam operation
only the two OUTER bulbs should be in use. On high beam, ALL FOUR of
the lamps should be on.
> Vertical arrangement: Two upper lamps are low/high beam and two lower 
lamps are high beam only. Two uppers on with low beam only, all four on 
with high beam.
> 
> In the late 80s GM played with this a bit with their really small
sealed beams (think 1988-89 Silverados and 86-89 Centuries, etc), in
which case the outside lamps went off with high beam and the two inner
bulbs operated only.
> 
> Jeff Reeves
> Auburn GA
> 94 Cherokee
> 79 Spirit
> 73 Javelin 401
> 72 Javelin SST
> 69 Ambassador DPL
> 
> 
> 
> 
> Frank said:
> 
> Message: 7
> Date: Thu, 13 Jul 2006 00:35:03 -0400
> From: Frank Swygert <farna@xxxxxxx>
> Subject: Re: [AMC-List] Halogen Sealed Beam Headlights
> To: amcrelay@xxxxxxxxxxxx
> Message-ID:
> 	<ADVANCES62ix4A2DreB000000b2@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
> Content-Type: text/plain
> 
> 
> 
> IIRC, four headlight systems use all four lights only on dim, so
> actually draw more power on dim than bright (55x4=220W; 18A@12V).
When
> on high beam the inboard lights (dim only) go out (60x2=120W;
10A@12V).
> Of course placement of the filament in the bulb (reflector) and
aiming
> has a great affect on lighting.


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