The rear defogger has power to it but only the wide band across the bottom gets warm not the lines going across the glass. I have checked these according to info found here and other sources and everything checks out. I have another glass and it works the same. Am i missing something or is this just how it is?

 

FWIW, my rear window defroster gave up decades ago. Is the other glass you tried NEW or just another old used one? If an old one, likely it's suffered the same degradation as yours.

 

It is another old one out of a tailgate i bought. I was just hoping this was not a common problem and i was overlooking something. Thanks Blueman for the input.