No turn signals.

Just yesterday my turn signals stopped working on my 56 poncho. My fuse is good, my fuse box contacts are clean and the turn signal wiring is good. My blinkers just stopped working out of nowhere. Both my tail and brake lights still work.

How can I check to see if the flasher has gone bad or if it's my turn signal switch?

 

after what you said , the first thing i'd do would be to try a new flasher.

 

Sounds like a flasher to me. It's also cheap and easy to replace so I'd start there too..

 

put in a new one and see if it works. if thats not the problem, well hey....youve got a spare flasher.