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I purchased a bunch of the connectors and pins to the mt1000 mva power cable. I would be willing to mail you one if you want. You should, however, avoid the pin out on bat labs for the connector. It leads to letting the smoke out.
I was looking for the same plug/cable for my MT1000 mtv also. While looking through a building about to be destroyed found that the old gas furnaces used the same plug with real heavy wires. I did use the Batlabs pin out for the plug and it works fine. You might try a HVAC supply house. Wires were colored white and black though with no fuse.