old battery was dying so i replaced it. ONce hooked up i had power to all lights and radio and all that. When I turn the ignition to start everything dies. Will not crank, all lights shut off and have no power. Tested the battery the battery is good, all hook ups are good and wires have been triple checked. Funny thing is when I get a jump from another car the mustang will fire right up as if nothing is wrong. I am baffled and not a mechanic, I need help. All suggestions and advice are really appreciated.

 

its a connection issue.. take all of them off and ohm them out and clean them.