Please help me! I over torqued my ground to the coil pack on my 2010 Mini Cooper s R57. So the wire broke away from the ring terminal. I know what to do and how to fix it. I just need to know what’s the right type of ring terminal to buy so I can reattach it. I used one from oreillys and the irrational idling started to fix itself then it started rough idling again. I assuming I used the wrong ring terminal. Please help. Also is it necessary that I solder the ground after I crimp it. Please help