AntMan401

After doing my Motor swap I noticed that One of the Four Wires that come from the Engine Harness to the Plug that Plugs into the Alternator was cut. It was cut so close to the Plug that I just decided to run and OBD1 Alternator with OBD1 Plug (yes I am running an OBD1 ECU too)

So we hooked up the Plug and the Alternator and the car finally started to work. Took it for a drive and the Speedo stopped working. Checked the Alternator/Speed Sensor Fuse and it was blown. Replaced it with a new fuse and took it for another drive. Speedo stopped working again. Checked the Fuse and it was blown.....again. Took it home and parked it and the fuse blew once more.

I rechecked all four Wires and they are connected fine. No loose Wires or Wires grounding out, that I can see. I have no clue what to do next. Im told by some people that it could possibly be a short but I dont know where else to look for it other then those Four Wires. Any advice?