no turn signal on one light

I've replaced the flasher and bulb already. The problem is with the front turn signals. The parking light on the driver side works, but the turn signal doesn't. It'll just turn the light off. The passenger side's parking light doesn't work, but the turn signal will flash.

I've checked the wiring connection and don't see anything loose or damaged.

Oh btw, '73 duster
Author: admin