Well my wife bought me a Recon Xtreme tailgate bar. My flat 4 pin and my 7 pin trailer connectors all have power. I have plugged the 4 pin from the bar into my trucks 4 pin. I have hooked up all the wiring that comes off the bar. But the bar will not light up at all. Is my bar dead? Is there any way I can check out if the bar is dead?