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Old 12-20-2012, 09:26 PM   #21
Titanium Tony
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Even if the car doesn't have a dedicated harness, it shouldn't be too difficult to splice into the rear defrost circuit. I already have power in the mirrors for the signals, just need to purchase new mirror glass and follow the same wire path as the signal wiring to each mirror. At least it sounds good when I type it...lol.

btw: Does anybody have the wiring diagram for the rear window defrost circuit?
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Old 12-22-2012, 08:42 AM   #22
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I'll see if I can get my hands on a wiring diagram. That could answer all our questions.
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Old 12-22-2012, 06:14 PM   #23
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I haven't been able to get a diagram, but I did pull off some of the interior trim and pulled the connectors. So I have just the basic mirrors, and on the LH side my harness has 6 wires and my mirror only has 3 terminals and the RH side is 8 wires for only 5 terminals. So that's 3 extra wires, and if I had to guess ones for signal, another for heat, and the final one for puddle light. So I'm almost positive our cars are prewired. We only had the standard mirror in stock so I'm ordering one in so I can test it out.
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Old 12-22-2012, 06:20 PM   #24
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Good to know the wires are there
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Old 12-22-2012, 06:32 PM   #25
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So can you acquire a multimeter and test those unused wires for 12v when he rear defrost is turned on. That would be a big plus if we already have power there.
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Old 12-22-2012, 10:40 PM   #26
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The right mirror also contains the outside temp sensor. I think that's two more terminals.
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Old 12-23-2012, 12:29 AM   #27
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I'm In the same place. I would love to have the heated mirrors on my car as I had no idea how much snow and ice would plant itself to the mirrors. I really hope this is a fairly inexpensive and easy mod.
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Old 12-23-2012, 08:20 AM   #28
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Yeah I believe all models have the ambient sensor in the RH mirror. Well not really sure on the S models.
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Old 12-24-2012, 01:07 PM   #29
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So today I've made a break through, I was able to hook at a mirror that was signal only to my car and behold it works!! It's prewired for signals at least, I have a mirror thats signal/heat/puddle coming in wednesday hopefully. So then I'll be able to tell if it all works, and I'd be pretty positive it will!!
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Old 12-24-2012, 01:20 PM   #30
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So what parts are needed exactly for this to work, assuming it does?

and how much do they cost?

I have just the turn signals on mine and would love to get heated mirrors for it, if it is reasonable to do.
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