According to the FSM, it looks like it's the black one. It should have 3 prongs.
Taken from the FSM
Turn signals do not operate.
1. HAZ-HORN fuse blown........................Replace fuse and check for short
2. Turn signal flasher faulty....................Check flasher
3. Turn signal/hazard switch faulty..........Check switch
4. Wiring or ground faulty.......................Repair as necessary
