[hotmilk400]

it def seems like a bad ground , or broken wire issue.

check your battery again, and make sure the terminals are clean. double check your fuses.

then take a mutli-meter, and turn it to the ohms settings. touch the one terminal on the Negative batter terminal, then the other on any unpainted bolt or unpainted metal under your hood. it should read 0 Ohms on a digital reader (or the same thing it reads when you touch those to leads together.)

if it does not, u have a bad ground. you might also want to follow those wires, and replace the ground when it connects to your car (or just buy 4awg wire and a self tap screw, and make your own.