I'm replacing my turn signal bulbs with LED clusters. So, I have to change the flasher to keep them from "speed flashing." First question: Where's the turn signal relay on our bikes? Second question: How do I hook it up?

According to the wiring diagram, the stock relay has 3 wires, gray, black, green. Green is the ground. Gray, I think, is the power, and I don't know what the black does. The new flasher has only 2 wires, one red, the other black. Anybody able to help?