Tail lights and corner lights won't turn off my 300zx!!

[300zxfreddy]

Okay so I turn off my car once I get home but my corner lights and tail lights won't go off. I don't know what the problem is, I take off the key from the ignition switch but the corner lights are still on. The only solution for me as of right now is to unplug the negative from the battery. Does anyone have a clue on how to fix this problem???