I'm going to rewire the Chief with all new wire,soldered connectors,heat-shrink,rubber boots,EXIDE battery box,with two 6 volt batteries,either in parallell,for 6V,with more current,or series,for 12 volts...instead of 6V+ground,can I rewire this for 12V- ground? I have a wiring diagram,but am unsure about changing the voltage and polarity,and don't want to smoke the wiring harness...