Review on Enhance Motorcycle Turn Signals: 2-Pin Electronic LED Flasher Relay for Fixing Hyper Flash with Bulb Compatibility by Trey Michaels

OK but if you plan on keeping the stock halogen turn signal there are a few extra steps that need to be taken. I pocketed it and all four started blinking. I knew what was causing the problem. I cut two wires going to the display on the dash. Then I placed a diode on each wire so that the diode's strip was facing away from the wires. From the other end of the diodes I connected them together and connected the knotted end to a terminal of the turn signal. Then I took another turn signal wire and ran to ground. Problem solved. The turn signals worked as they should and the indicator lights up as expected. Updated in a few days. I changed the rating to 3 stars because as others have said, the faster the motor spins, the faster they blink. So if you're really using this, they're useless unless you only use the turn signals when the engine is idling.