Wiring issue, need help

Sounds like your battery is almost dead and/or you have a loose connection and/or bad grounds. Better read up on some basic automotive electrical before you ask to many more questions. You need to be specific with regards to your problem.

Start with recharging the battery. Sounds like you have a short draining your system or bad connections not allowing you to get full power to the load.

Also noticed that you are looking for all your problems under the dash. Try popping the hood and look there. Lots more wires coming into the bulkhead connector that could be problematic. Get a wiring diagram at Mymopar.com for your car.