I see that you have a diode across the relay and that you warned me about connecting the diode in the correct orientation because of the positive and negative voltage.
The original use of the timer that I am using operated a small 3 volt dc geared motor to open and closed a flap. There are two leads that come out of the timer, one red and one black. When the timer opened the flap, then the voltage on the red lead is(+) and the voltage on the black lead is (-). When the timer closed, then the red lead becomes (-) and the black lead is (+). I can't use a diode if the voltage output from the timer alternates as I have previously described. Maybe what I want to accomplish can't be done.
Thank you