Outside rear view mirrors defroster.

[jeepo23]

yes they are. I just removed my mirror glass and the power leads run to it. Checked for voltage and its there when defrost is on, 12V.

Mirror glass measures 130ohm resistance.

Not sure why the things dont defrost anything though?

[80stech]

Originally Posted by jeepo23

Mirror glass measures 130ohm resistance.

That's why. I have 2 euro mirrors on my workbench right now and one measures about 8.6 ohms and heats up nicely, the other about 57 ohms and does not. I was going to try to stitch the grid when I had some time haven't gotten around to it.

[jeepo23]

Originally Posted by 80stech

That's why. I have 2 euro mirrors on my workbench right now and one measures about 8.6 ohms and heats up nicely, the other about 57 ohms and does not. I was going to try to stitch the grid when I had some time haven't gotten around to it.

Hmm, id be curious to know if your successful with this? Because I don't see much behind the glass, its pretty much all the plastic backing plate.

I found this thread; Fixing E36 Heated Mirrors . . . DIY! | BMW E36 Blog

But the X3 mirror backs don't have access to the solder runs like they are shown there. So I don't know how i can repair the grid. How did you plan to even access it?

Keep me updated if you can fix it cause i'd love to fix mine!!