Hoping someone can point me in the right direction. I have a 2005 BA XR6, when it rains she won't start in park, lights come on, and it's like a flat battery, but it's not (just replaced that) but she will start fine in neutral. When there has been no rain for a few days, starts fine in park. Water/condensation is obviously getting into something but I have no idea where to start looking, I'm hoping a mechanical guru may be able to give me a starting point

id be looking down toward the transmission end somewhere in the plugs first, just an uneducated opinion.