[alantf]

I've done you a simplified drawing of the turn signal circuit. Forget about the marker lights for the moment, because they are fed from the lighting circuit, and just use the same ground as the turn signal filament of the bulb. I've put in some arrows to show what happens when the switch is pushed one way. The current flows through the switch, then to the front & rear bulb (in this case, the bulbs at the bottom of the drawing) The current carries on to one side of the warning light, and returns by passing through the front & rear bulbs of the opposite side signals. When the switch is put the other way, the current flows to the other bulbs, and flows in the opposite direction through the warning light. This is why it's essential to get the correct wattage bulbs, so that everything works in harmony. Also, all grounds must be perfect, to allow the current to flow in the correct path.[attachment=0:5wkzhaqg]img003.jpg[/attachment:5wkzhaqg]