5KCSTQW rear window defroster

[Paul Meyers]

Rear defroster fails to function.
1. Switch good
2. 12V all the way to the bus that feeds the network of conductive elements
crossing the glass. 
3. Good ground all the way to the bus collecting electrons from the
elements.
4. O Volts on each element 50 mm out into each element from the ground side
5. Measure from the positive side, some traces have voltage almost all the
way across, but measure 12 V. One trace measures approximately 3 volts at
3/4 of the way across from the positive side (this one works as I expect,
though it's broken). 

I expected these resistive elements to work like a printed resister
potentiometer. Thus, they would all measure some reduced voltage above
ground when measured at some distance from the positive bus. Alas, only one
seems to show any voltage drop at all. None of the elements carries any
voltage all the way across the window.

I might attempt to use the conductive bridging paint suggested in other
posts, but that seems like it would only work for the one trace that
actually shows a voltage drop. All the others seemingly have had all the
resistive element scrubbed off, leaving a conductive trace underneath. This
seems unreasonable, since I expect the traces to be a single resistive
material applied during the manufacturing process. 

What am I missing? Anyone know where I can acquire actual resistive paint,
rather than conductive, to repaint the whole resistive strip? Any other
solutions out there rather than replacing the whole window ($500 from
Nationwide).

Paul Meyers 
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