Re: 9007/9004 lights....

["Graydon D. Stuckey" <graydon@apollo.gmi.edu>]

On Wed, 13 Mar 1996, Jim Griffin wrote:

> How does it improve the lighting? The wattage is not greater.... I think it
> was because the filaments were vertical and not horizontal inside the bulb,

North/south actually, or fore/aft relative to the car.  The 9004s are 
perpendicular to the centre of the car.

> right? If I do this, what is the end result... better beam pattern
> altogether, or just a narrower beam further down the road? Does an
> adjustment have to be made so as not to blind oncoming drivers?

I have only done one so far, but it seems to hav a better beam pattern.  
It's easier to remove the headlight and file out the two offending tabs 
in the housing, rather than the bulbs themselves.  You also have to swap 
a couple wires to get the right beams.

> Also, I just noticed at my local auto parts store that the base on both the
> 9004 and the 9007 that they were selling were identical. The only difference
> was the position of the filaments inside the bulb (other than the price of


Look very carefully.  Two of the three slots are in different places.

> So, before I spend the $30.00 to "try" them, any thoughts? Would it be worth
> the attempt?

Yes.

Later,								
Graydon D. Stuckey								
graydon@apollo.gmi.edu								
Flint, Michigan   USA
'86 Audi 5000 CS Turbo Quattro, GDS Racing Stage II				
'85 Mazda RX7 GS 12A-leaning-towards-a-13B-soon