1) Need TXDWorkshop tool or any tool can open .txd files
2) Open particle.txd with TXDWorkshop (located in your gta san andreas/models folder)
3) Search and replace "coronaheadlightline" with this "coronaheadlightline" from "Textures for the 2dfx lights" folder
4) Search and replace "coronastar" with this "coronastar" from "Textures for the 2dfx lights" folder

*This is only if you have another modified particle.txd, and you wish install this textures manually*