PS/2 Link Cable W/ Both PS/2 and DMG link cable port

I just have a quick question about a theory i've been working on. So basically what i'm wanting to do is create a PS/2 Keyboard that has both the Male PS/2 Port and the DMG Link Cable port, would this be as simple as just splitting the wires so that each one wire separates into two? I wouldn't want to use both at the same time, just have the option to plug in my PS/2 Keyboard to both my DMG and my PC.