My daily driver, 2001 dodge ram, died on me yesterday. I put a new battery in it and still no power, no dummy lights or anything. Here's where I'm perplexed, I hook up a voltmeter to the batt and it has 12volts with the positive cable hooked up. When you touch the negative cable to the battery the voltage drops to zero! As soon as you take it off the voltage builds back up. Does anyone know what's wrong and how to fix it?? These electronic trucks are confusing sometimes to me.