I just bought some t5-ho 4 bulb light fixtures at home depot, it has 4 wires and can be wired for 2 switches to operate 2 or 4 bulbs. I want all 4 bulbs to come on using 1 switch. It has green- ground, black- hot, white- neutral and a grey/red ?!?! Should the grey/red wire be wired to the black...