We replaced the column switch in my 1993 Mazda B2600 pickup thinking that would fix the fact that my turn signals do nothing. They don't blink inside or outside of the truck. Changing the column switch did not help. I'm wondering if anyone can tell me what might cause this problem or know where I can get the wiring diagram for the truck. Please e-mail me.

Check the flasher unit under the left side dash.

That was exactly the problem. Thank you very much!!!