I am trying to connect the wires on a ridding mower. The engine is from the 80's and the mower is from the year 2000. The problem is the mower frame has 1 wire going to the alternator and one to the armature. The engine I am trying to connect has a two wire harness from the alternator and one killwire from the armature. Please help me figure out how to connect the wires

I am trying to connect the wires on a ridding mower. The engine is from the 80's and the mower is from the year 2000. The problem is the mower frame has 1 wire going to the alternator and one to the armature. The engine I am trying to connect has a two wire harness from the alternator and one killwire from the armature. Please help me figure out how to connect the wires
I don'tthink you can wirem the old engine to the newer mower frame. However, there must be someone who reads these questions that know more than I.

I replaced the engine on my rear engine toro to a bigger size .my toro now has a 8.5 briggs when I got ready to hook up the wire I had one wire (red) I knew where it went ,but there is a black wire I believe is the coil wire ,where do I splice this into or plug into.I can not find any place to plug this wire in??