I am having trouble with the rear window defrost, not working on my 96 bonneville.
I have replaced the relay under the passenger side hush panel, checked and cleaned the BUS hook-ups that are on the passenger and driver side, under the carpet. Both looked pretty good. metal strips inside of the bus hook-ups were clean. I took a emory cloth and just touched them up a little.
I unhooked the wires that hook to the glass on both sides and they both look and hook tightly.
Where do I go from here to look at next?????