The light sockets that are in my speedo cluster for the left and right turn indicators are single wire bulb/sockets. Looking at the wiring I'm thinking that they should be 2 wire sockets. I do not see how by the diagram that each is separate from the other. Looks to me that if the flasher sends the signal they will both flash. Am I missing something and do I need to get 2 wire sockets? I also don't see how they ground. Looking at the diagram it seems as if they have two hot wires. One to the column and one to the flasher.