No turn signals!

Direct from section 15-6 , fig. 7 of the Big Blue Book for 67's.

1. Burned out bulbs, or loose socket connections.
2. Open connection at turn signal flasher.
3. Loose or broken wire from ignition switch to flasher.
4. Defective flasher
5. Loose or broken wire from flasher to turn signal switch.
6. Defective turn signal switch.
7. Broken, shorted, or loose wires from switch to lights.

Personally, mine was burnt out bulbs causing only one front and one back on opposite sides not to work...go figure!