I bought after market turn signals for my '78 cb750f. The wiring diagram for my bike shows that on the front turn signals there are 3 wires. See picture.

It looks like one wire is a power wire, one is ground, and one is a wire that comes from the signal switch. My turn signals came with only one wire coming out of them. So, we hooked up ground wires to each bulb housing and it created a functioning ground. The problem now is that the front turn lights still lack one wire. When I plug the power wire into the blue and white striped wire (turn signal switch), it causes all of the turn signals to light up. When I plug the power wire into the solid blue wire (power I think), none of the turn signals light up. Any ideas? Suggestions? Good jokes?