Put a good insulator about your new splice. You don’t want that shorting out on something. Sparks are terrible. Hooked almost everything back again up (other than my rPi) , ran my printer for maybe 10 minutes just before it shutoff once again. Then tried plugging the rPi again http://3dprinterparts06395.collectblogs.com/18035882/not-known-facts-about-atx-psu-for-3d-printer