I just got my "new to me" mill set up in the shop today. Partner III with Centurion 6 controller. I am in need of help concerning the connection to my RPC. I am really not sure which L# to put the wild leg on. I have atached pics of the mill and control panel. I am told it was a Cent 5 that was upgraded to a Cent 6 controller. The rear electrical enclosure has a 2nd box attached to the door that must contain the PC. The mill came from a technical school out of Wisconsin and looks to be in very low mileage condition. Any help would be appreciated. I did receive the operation manual as well as a disc that appears to be the parameters.