Aleks, Thanks for the reply.  I was using Abrites for a PMI and it did everything but a Parameter Reset, wasn't listed as an option.  That is why I wanted to clone it.  I will go back and see what Autel can do.

The connector in question is green I have attached a Picture. If you dont find a green test mode connector you might have to put a fuse in the fuse box under hood. Diagram attached. (Usually 2010 models and up roughly) Depending on the model it might be located in different area of the fuse box.   You only need to connect it if you want to edit the vin in the ecu, if you dont care about vin then just learn keys.    

Have you tried doing a parameter reset? I don't think you need to clone it. You may need to change the vin later if required by your state. Im608 or other tools should be able to handle it.

I have an ECU from a Mazda 5 that I need to clone. ECU is a model # L5E2 (made by Mitsubishi).  I have Flex, DC706 and I/O Terminal but I don't see this model listed on any of those.  Anyone know of a tool that can get this done?

Just program the keys as normal + in diagnostic functions under PCM/ECM change the vin. If it errors on the vin change there is a jumper connector somewhere. If it does not , there is not.