Well if your worried about the housing turning yellow, you can do what I did.
Since the sidemarkers look ****ty anyways right next to the headlights.. I drilled a hole into the turn signals and stuck the sidemarkers lights in there.
That way the bulb is not big and hot enough to burn anything, and it stay on with the parking or headlights, and you no longer see the retarded sidemarkers.
Of course I have clear sidemarkers though.
BTW... in order for the sidemarker light wire to be long enough to reach the front turn signal just grab some thin speaker wire and extend it.
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2001 EBP Honda Prelude Type SH
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INTERNAL MODS: Removed Resonator. K&N Drop-in Filter. Neuspeed Sport Springs.
EXTERNAL MODS: OEM Front Lip. Mugen Side Skirts and Rear Valence.
ICE: Sony CDX-M620