Turn signal lights stopped working

After I tried to change my right tail light on my '94 Toyota pickup, all of my turn signal lights just stopped working. Even my emergency lights stopped working. But when I turn on my headlights, the front left & right turn signals will light up, but still no turn signal when I try to use it. I put back the stock tail lights, but it still doesn't work. Any suggestions to fix or reasons why it doesn't work is welcomed.