Where is turn signal relay signal and emergency flasher?

There are two wires for this one to upper light other to turn signal switch then to brake lights. See if turn signals work if they do then that eliminates the turn signal switch. If they work then check the white wire leading from brake switch to turn signal switch for power if you have it at turn signal switch it still could be bad. Then check yellow wire and green wire lead to brake/turn signal lights if power there then it is a socket bad or ground which is black and connects at right door sill.