2004 Chrysler Pacifica bad ground

Hello, i'm wanting to know how to run another ground wire to transmission stud. I seem to be having some kind of ground trouble where as all the lights on the dash come on, the radio shuts off, a/c shuts off, windows wont let down, and fog lights are blinking rapidly. I saw that the negative 2 or 4 gauge wire that goes to the transmission stud was frayed because of the motor mount. I was told by a 2carpros specialist that I can just run a new negative cable straight from the negative side of the batt to the transmission but this isn't working. So I would like to run another ground from engine block to tranny stud but I need this to be easy as possible for to do. Which route should I take to get a great ground so my wife can drive the car without to much worries. Please help me as I cant pay for anything at the moment. The g 101 strap that comes from transmission stud and goes to engine block is the ground that I speak of. Thank you so much.