Hi, me again! :)

This place seems like a fountain of knowledge! :)

My rear demister doesn't work so well. Specifically, little patches of it work, so when it's foggy I get a few spots that I can see through. The grid lines are all there and at a glance they seem to be continuous (there are no visible breaks). However, on testing it with a continuity tester, I found that looks can be deceiving! I think it was only the top grid line that actually worked the entire way across the window. The remaining lines were broken.

Now, this whole thing doesn't really make sense to me, because surely if a grid line is broken at some point, the entire line shouldn't work, as the circuit is broken?

Anyway I bought a "rear window demister repair kit" which is a tiny bottle of some special metallic paint, and set to work repairing the first broken line. After repairing the first break that I found, I tested again, and basically it turns out that I probably have to paint over each entire grid line, which is very, very tedious, not to mention expensive as the bottles contain 1.4ml of paint and cost about AU$15 each. I think that most of the grid lines have been scratched so much that they don't really conduct anymore, although they look like they're fine.

What options do I have? Would fitting a new rear window with grid lines that work be a viable solution, or would that just be a waste of time and money? I've seen rear demister kits that you're supposed to stick on to the window, but I don't know if I want to use one of those - they seem quite ugly. It looked like you had to stick a large piece of sticky plastic over the entire window, and I don't imagine it would look particularly attractive, even if all the air bubbles were smoothed out!

Thanks again for any suggestions! I think I'll go introduce myself on the "Introductions" forum now!

-Sam