This ASI plugin increases limit of searchlights, now you can create more than 7 searchlights(up to 128) with opcodes:
06B1: 383@($7257, 6i) = create_searchlight_at 0.0 0.0 0.0 radius 0.0 target 0.0 0.0 0.0 radius 0.0
06C1: create_searchlight 58@ on_car 40@ with_offset 0.0 1.0 -0.5 radius 0.4 target 2228.36 -1171.48 25.82 radius 5.0
etc...
Works only with 1.0us HOODLUM exe.
To install this you need ASI Loader(Silent's ASI Loader strongly recommended). Just copy SAsearchlightlimitadjuster.asi in GTA SA root directory.
Demo script to spawn 30 searchlight on Grove street(like on the screen) is included to archive.