I built an electric bike from a kit, and have been using it to commute to work everyday for the past 4 years. My battery box is a converted metal tool box containing 4 12volt sealed lead acid cells that can be switched to provide 24, 36, or 48 volts output, and can be recharges with multiple charges. I think it would be fun to wire up 12 volt turn signals and a horn. Has anyone ever done this? I've attached some recycled motorcycle turn signals to the battery box. I found LED bulbs to replace the filament bulbs. I need an LED flasher, and a switch to mount to the handle bars.