Going to be installing a led light bar. My guestion is, under the hood there is a power block. Acc, bat, neg post on it. Can i hook up to it? I tested with a volt meter and theres no power unless i test from acc to a separate ground. Is the ground post not grounded yet? Batt post not hot either? What am i missing? Where is tbe best place to get power for the light bar. 2015 1000xp4. Thx