Shop › LUSFB100 Image 1 of 1 LUSFB100 $13.50 3-prong flasher unit for use with screw terminals. Lucas boxed. TR2-TR3-TR3A (up to TS60K). LUSFB100, 141-750 Add To Cart Added! 3-prong flasher unit for use with screw terminals. Lucas boxed. TR2-TR3-TR3A (up to TS60K). LUSFB100, 141-750 You Might Also Like Ignition Switches, Most Models from $15.00 LU39890 $12.50 LU576105 $3.00 Battery Box and Hold Down, TR2-TR3-TR3A-TR3B from $0.35 LU31284 $65.00