All this recent talk about relays has me thinking. On my 03 if I pull the signal stick all four come on but of course pushing the stick locks only the highs on. I don't have the time or a clue where to begin tracing wires. If you found this circuit you could switch it with the high beam circuit. A simple wire switch should get you all four lights on and when you flash only the highs will come on. Anybody with a diagram and time to kill?