Harley-Davidson’s new Battery Charging Harness with L.E.D. Charge Indicator takes your basic battery tender connection and adds a simple and worthwhile diagnostic tool. When the battery voltage has dropped below optimal level, a red L.E.D. illuminates, letting you know it’s time to attach the tender and bring things back up to snuff. It’s a dandy bit of peace of mind for a minimal cost of $14.95.