My wife has had issues with locking her doors (they would unlock but not lock [neither the fob or the interior button worked]) for about 6 months. Now she tried to start her 08 Nitro but it would not start (dash lights still worked but nothing else). So naturally we think it is the battery. Take the battery to AutoZone and they said that the battery is at 0% and 10 volts so they tried to charge it but said that the battery will not hold a charge. They replaced the battery because it was purchased only 2 years ago. I go to install the battery (I connected the neg terminal first) and nothing powers on. I disconnect the neg terminal and check the fuses (everything looked good). When I reconnected the neg terminal, the radio starts cycling through cd's but does not turn on (I start to think I'm getting some where). I disconnect the neg terminal again and check the fuses again and make sure that the TIPM is connected securely. Now when I reconnect the neg terminal the horn starts blaring and the wipers turn on. So my question is, do I have a bad TIPM? Or, is there something else I can check? Please note that I do not have a multimeter to check continuity.