Rear Glass Defrost

92 CCW, Glass is from my old 93. Defrost was working 2 weeks ago, now nothing.

Switch lights up, have 12V to ground anywhere I test on the glass.

Where is the ground for the glass or what else should I be looking at?

Thanks in advance.

Don't know for sure what your problem is,  but if the ground connection to the glass is bad this is what you can use to repair it:

Power goes through the lift cylinders. Turn on the defog and meter between either end of the lift cylinder. If you have voltage, then it's not completing the circuit properly. I simply ran a jumper wire to bypass the cylinder.