Rear Window Defroster
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=81497
Printed Date: May 09, 2025 at 10:34 AM
Topic: Rear Window Defroster
Posted By: theralpher
Subject: Rear Window Defroster
Date Posted: August 11, 2006 at 5:04 PM
Trying to find the color code and the easiest loacation to tap into the wire from the switch to the rear defroster on a 1999 Ford Taurus 4D Sedan. Also, is this a positive or negative triggered wire
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theralpher
Replies:
Posted By: INSTALLER_MSS
Date Posted: August 13, 2006 at 3:15 AM
test it with a multimeter. just probe each wire, one at a time, and turn the defrost on and off until you see something change polarity or get power or ground through it, then proceed accordingly.
Posted By: theralpher
Date Posted: August 13, 2006 at 7:26 AM
Thanks for the info. The button is part of the football style radio system that Ford used several years ago and I was trying to avoid pulling that out if I could locate the wire somewhere else.
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theralpher
Posted By: mobilecustoms
Date Posted: August 13, 2006 at 10:26 AM
it is a blue/orange behind the radio in the big connecot it is a neg trigger. double check with a dmm.
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Posted By: KarTuneMan
Date Posted: August 13, 2006 at 11:05 AM
The 2000, is blue/orange...in that location. don't know about the 99 If it's there, it needs a "latched" pulse. negative.
Posted By: mobilecustoms
Date Posted: August 13, 2006 at 6:12 PM
it should be a blue/orange because my 98 was the same. it needs a pulse not a latch negative.
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Posted By: theralpher
Date Posted: August 14, 2006 at 5:57 AM
OK, thanks guys. I pulled the radio and found it.
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theralpher
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