If you get 1/4" spade terminals (to fit the TIU posts) and size up (e.g., use a 10-12AWG terminal for 2 14 or 16 AWG wires), you can crimp both wires in the terminal and then connect to the TIU post
OR
You can put 1 wire on a terminal and clamp it in via the screw post, and put the 2nd wire in a banana plug and just plug it in the end of the terminal
OR
you can put each wire in its own terminal, and screw both terminals down by putting the terminals bottom to bottom so the wire loops oppose each other