I hard wired directly to the battery. You could wire it to an empty slot on the accessory block (next to the battery) but I had trouble with the screws and decided I wanted the Garmin to get juice even if the bike is off. The battery will stay charged and and it won't shut off when I turn the bike off. I have to remember to turn the GPS off, but the Garmin doesn't draw much juice even if you leave it on by mistake. Hard wiring allows you to keep the glove box power outlet available for an unplanned powered accessory (er like my wife's dead cell phone) on a trip.