here I go again

Ok disconnected choke from wrong circuit,replaced ecm, car started right up ran long enough for things to set right,temp good, oil psi good , shut it down to cool and check for leaks.All is good.Go to start the next day runs and starts blowing fuses{the ones for the fusable link I installed} Replace the fuse and put my meter on the batt +and - and started checked voltage, and it went from 14v to ,depending on rpm to up to 17.I installed an ammeter and can see almost 60a on start up and of corse it blows the fuse and now once the fuse blows instead of the car still running it starts to misfire and shuts off.Yeup and guess what now I have no spark.I've followed electronic voltage regulator schematics ,I've followed electronic egnition schematics,I mean the egnition if you think about it is only tieing in two wires, the one to the ballast ''hot'' and one to coil neg.I just don't unders stand where I went wrong.