Calling on anyone who has experience wiring a boss plow. I just pulled the wiring harness out of an '03 GM 2500 and putting it in my '01. Thought I had everything just about done, but went to turn on the headlights and got nothing. I plugged the driver's side back into factory plugs and got high and lows on together. The volt meter is reading 11.99 at the plug for the plow wiring harness, but plugged in gives me nothing. The only things I don't have wired yet are the running lights and turn signals. (Purple, yellow, and red wires) I read on plowsite about switching +/-, so I tried that with no luck. I'm guessing it's a ground problem somewhere, but I'm not sure. Any suggestions would be great.