2001 XJ - Rear defrost doesn't work, suggestions?

The switch itself works because the little light turns on and it turns itself off after the right amount of time, the rear window just doesn't defrost.

The rear dome light also doesn't turn on when I open the hatch but it will turn on if turn it on manually by pressing it. I'm wondering if there is a break in the wire somewhere?

Anybody else ever experience this problem??