[Vwdiesel] how to test rear window defrost lines

[Tad]

I don't think an ohmmeter is going to do you any good as the wires are
connected in parallel, so even if you're on either side of a break, you'll
just be measuring the path backward to the bussbar and through the good
lines.

Maybe real world conditions are the way to go, or perhaps hook it up, turn
it on and find a way to measure the minute amount of heat generated.

On Thu, Nov 17, 2011 at 8:05 AM, Bryan Belman <dieselwesty at yahoo.com> wrote:

> I have the back window out of my van as rust needed to be addressed under
> the rubber, that is done.
> I know the rear defrost lines, now almost 30 years old, did not work well.
> I removed the tint from the grass I had put on years ago, that was tough
>
> Now, having trouble finding a good way to test, ohm meter does not seem to
> be the way and I do now want to hook a battery directly up to the glass, I
> do not think that is a good idea.
>
> I was hoping to fix the breaks with the fix kit I have and then put new
> tint on and put back in van, but ohm testing shows from .007 to .003 in
> various  places and only .001 when within 2 inches of each probe on the
> defrost line.
>
> Does anyone have a good idea or do I need to put in back in van and put
> the tint on later after I find the breaks under real weather conditions.
> ??
>
> Bryan Belman, Pt. Pleasant, NJ
> 04 Jetta Wagon TDI PD, 100hp, 5sp -- running :<)
> 92 Jetta 1.6 Eco-Turbo Diesel, 5sp -- running :<)
> 82 Diesel Westy 1.9NA -- running :<)
> 70 Type 1 stock Elm Green Beetle -- Under Restoration :-)
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