diff

Hey there, I am currently swapping running gear from a stacked ms6 to a good running body. I have hit a problem, where the bigger plug for my diff, has 2 wires and a 2 point plug but my body loom to diff the bigger plug has 5 wires and a bigger plug that won't connect, Google is no help, mazda...

So last Thursday on my way to work I was doing 75 in cruise control, got passed by a Z and started to accelerate. Started hearing a whirring noise and then a bang. Pulled to the side of the road to wait for the tow. Engine revs to 6.7k no problems, but nothings getting transferred to the wheels...