Disclosed are a multi connector, a wiring method thereof and a display apparatus having the same that is configured to use a common interface (CI) module for data communication between an electronic apparatus and an external apparatus or a plug used for an electronic connection of elements, regardless of standard conditions such as the number of terminals. The multi connector includes a body portion including a first slot portion and a second slot portion; a substrate portion including a substrate having a first surface; a plurality of first connection terminals provided on the first surface and extending to an inside of the first slot portion; and a plurality of second connection terminals provided on the first surface and extending to an inside of the second slot portion.