OEM HUSQVARNA 12 VOLT VOLTAGE REGULATOR. THIS IS A MUST ITEM WHEN RUNNING A HEADLIGHT/TAIL-LIGHT. PREVENTS BLOWN BULBS FROM IGNITION VOLTAGE SPIKES. YELLOW CONNECTS TO THE YELLOW WIRE FROM THE IGNITION, BROWN WIRE IS A GROUND WIRE IF YOU DON'T WANT GROUND/MOUNT THE REGULATOR TO THE FRAME.
