Rear Right Blinker problem!

My rear right blinker doesnt work when the headlights are on. When they arent on it works fine.. whats going on??

81 malibu

Check the grounds in the trunk. If they are not the problem run a ground wire into the socket on the ground wire side. It maybe broken in the socket or the socket just might be bad.

could be the turn signal (multifunction) switch