No spark?

Well update #2 i went today to wire the tach and digital speedo. The car ran today wired the few things into the radio wire(no longer has a radio)and now there is no spark again. I did notice that the coil is too hot to touch and the voltmeter is almost the whole way up. Figured the alt was just charging the battery ive been cranking over for the past few weeks. Is it normal for a coil to get this hot? It was new the other was losing some oil figured i would replace it. Where did i go wrong here?