[patrickt]

The traditional method is to have a switched hot fused feed going directly to the flasher unit. There are two other pins coming off that flasher unit. One goes to the blinking green light on your dash, the other goes to your turn signal on the stalk on your steering column. The steering column stalk switch sends that hot feed to either the right side signals, or the left side signals, both of which creates load which creates heat which makes the flasher go on and off. You can back trace the feed wire to the stalk column control and that wire will go to your flasher. You can back trace the wire that goes to the green bulb on your dash and it should go to the flasher as well.