If i push the button for the rear defroster the button lights up but the window doesn't defrost no matter how long i wait. Ive checked the fuses both under the hood and under the dash and they are fine. Ive looked at the wires on the rear window and none of them look damaged. I am out of ideas, i would appreciate any help!

 

Volt meter or test light and test left and right connectors to see if voltage is there.