GL1500 Headlight ModulatorThis is a headlight modulator. This is made by Signal Dynamics and is designed for use with bikes with dual H4 bulbs like the Goldwing GL1500's. This will fit all Goldwing GL1500's from 1988 2000. 01080, 01015, 48 2002, 48 2001 Our headlight module increases your daytime visiblity by modulating your incandescent headlight (think flashing, but not quite..) from about 30% intensity to 100% intensity about 4 times per second. When approaching oncoming