Review on 💡 Grote 44891 2 Pin Flasher: High-Performing Variable-Load Electronic LED for Enhanced Visibility by Dan Germain

You don't need an electrical engineering degree or detailed instructions just to wire one. It works great but makes a much louder noise than my standard turn signal, not a problem for me. although I installed it on the bike. Good luck hearing that while my bike is spinning! You must route the extra wire on this turn signal to a ground point on your vehicle (or any negative wire). The flasher requires a ground wire because it is a tiny computer (which needs its own power supply, so a ground) and not a standard resistive flasher (which heats up to 'open' the circuit and then cools to to turn it back on). This is because LED bulbs do not draw enough current to heat up a resistive turn signal. they just don't blink. But this device is installed and works great on both of my bikes.