I have a rhino 660 that has no electrical power when I turn the key switch, no dash , no lights, no anything. It has fairly new battery, key switch. I've already have done what STEVE S said to do for the grounding wires, (pigtail, engine cable to ground) done this way back. The rhino does this randomly, does fine for a few rides, then another day go to start it turn key & nothing. Any help would be great thanks.