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Old 07-02-2021, 01:30 PM #1
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Question Rear defroster disconnect

Hey everybody!

I searched around but could not find an answer to my question.

How does the rear defroster get disconnected? I understand when the rear glass is up it makes contact and then it functions. There has to be some wire connection somewhere.

I wanted to disconnect because I donít want that defroster grid to act like a RF antenna when I key up and send stray RF back down to the CB radio. Besides I donít use it anyway.

Thanks!!!

Bill
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Old 07-02-2021, 02:19 PM #2
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Originally Posted by rallypoint_1 View Post
Hey everybody!

I searched around but could not find an answer to my question.

How does the rear defroster get disconnected? I understand when the rear glass is up it makes contact and then it functions. There has to be some wire connection somewhere.

I wanted to disconnect because I donít want that defroster grid to act like a RF antenna when I key up and send stray RF back down to the CB radio. Besides I donít use it anyway.

Thanks!!!

Bill
rear defogger wire location
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Old 07-02-2021, 02:48 PM #3
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Quote:
Originally Posted by spartacus View Post
rear defogger wire location
Awesome...I will check it out!!! I removed the panel prior to my thread but I will check again.
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http://www.toyota-4runner.org/3rd-ge...8-sr5-2wd.html
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Old 07-02-2021, 03:57 PM #4
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Connection for defrost on the passenger side of rear window.
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Old 07-02-2021, 05:52 PM #5
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Ok!! So went in and removed the plastic cover and the inner metal cover. Unplugged both plugs and.......it appears I have less noise coming into the radio!!! I have to drive around and see how it sounds around the noisy areas of town.

Being in a urban setting the noise floor could get high. Scaling back the RF gain is what I would do. But if that noise is not coming in via the defrost grids then woot woot!!!

This mod was not my idea. I was watching a vid by BBI(Box Builder Idaho) on his cb mobile install. He mentioned this. And it wasnít his idea either. He had gone thru 4 fuel pumps and trying to reduce RFI. Someone told him to unplug the defrost. All that RFI would go all the way down to the CPU and cause havoc.

Sorry for the book! So far so good!!! Thanks for posting the pics of the loom and actual plug location!!!
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1998 T4R SR5 V6 2wd Evergreen Pearl OME 880 Toytec 1/4" spacer OME 906w/OME20mm(10mmx2)spacers Bilstein 5100 BFG KO2 31's Satoshi mod 1.5" BL(Fat Pats)

My 4Runner build:
http://www.toyota-4runner.org/3rd-ge...8-sr5-2wd.html
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