I currently am having trouble with the turn signals in my '85 TPI, when you use hazards they will turn on in sync like normal but if i try using the turn signals they turn on but wont blink as they should and stay solid, I have already been down new bulbs and checking wiring and a new flasher but every time I go to use the turn signal I hear a click from this box which I'm sure could be the problem but I'm not sure what it is, if you could give tips or even tell me what this box by the ECU is that would be great.

 

Check your grounds. The flasher can be bad from new. Flashing is based on resistence in the bulbs in total. Not enough resistence, no flash. Even one bad dead bulb will reduce flashing. I would try another analogue flasher assuming u are not using led bulbs.