Has any tried converting a 9005 (high beam) so that it will fit into a 9006 socket and receptacle for the TL fog lights? I saw some post and instructions from another forum (http://www.bmwe34.net/E34main/Upgrade/More_light.htm). It should make the fog lights a bit brighter especially if they are Silverstars.

 

This conversion only applies to ellipsoid headlamp styles. The 9005 bulb doesn't have a cap to allow the cut-off to function properly, so you'll have essentially high beams instead of fog lights. See how many people flash you then.

Ellipsoid lamps can use a 9005 bulb because the lamp itself incorporates the cutoff, so the cap on the end of the bulb is not strictly necessary. In these, and only these applications, I can attest to how well it works, as it transformed the headlights on my '93 Audi S4.

 

I have made this conversion. I'm using Sylvania Silverstars. I used to do this with my Integra. All you have to do is modify the top tab of the bulb and it will fit the 9005 housing. I used a dremel tool to shave the top tab. Silverstar bulbs are 60 watts, stock is 51.
The left bulb is the Silverstar.

Stock fogs:

Silverstars:

Another view:


The Silverstars are an improvement over stock, it might be too bright,......naw!!

 

i did this exact same thing on my old car. 98 accord. used the high beam bulbs for the regular headlights. it works great! a lot brighter! a lot easier to see!

then it melts your housing and wires.... have fun

i ended up ghetto rigging it so that it would even work. custom clips from the wires to the headlight connectors and some electrical tape. enjoy that!

 

I did this on my 93 and 96 Honda Accord. The lighting output was great. I didn't have any problems with the housing or wires all the years that I did this.

 

there was a post where someone bought the Hoen xenonmatch 51w 9006. it's not brighter but it matches the color of the HID better than what i see here with the silverstar pics. they posted pics as well. check it out unless you really just want brighter bulbs.