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Old 05-13-2009, 06:15 PM   #1
Scooby Newbie
Member#: 201491
Join Date: Jan 2009
Chapter/Region: NWIC
Location: Portland, Oregon
2002 WRX VF39
Stage Blue

Default Radar Detector Installation???

Ok so I am aware of the auto-dimming mirror wire located in the map light housing. But I was wondering how exactly to hook my radar detector to it. The only wire I have for the detector is the kind you plug into your cigarette lighter. Is it as simple as cutting the existing power cord i have and soldering it the auto dimming wire? Or am I missing something?? Any help would be much appreciated.
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Old 05-13-2009, 07:04 PM   #2
Scooby Specialist
Member#: 152591
Join Date: Jun 2007
Chapter/Region: MWSOC
Location: Wisconsin
2010 Jetta TDI Cup
Jet Black


Yes and no.

You will need wire diagrams for both. A simpler place to pull the power from is the clock location. The wire positions are labeled on the back of it, so that takes 50% of your work out.

As far as the cigarette adaptor for your radar detector, just take it apart and not the 12+ and ground, and attach them to the clock location wiring using your desired method (solder, vampire clips ext.)
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Old 05-13-2009, 08:36 PM   #3
Trust no one
Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
02 WRX
15 WRX/05 GTO


It's important that you don't just cut the cord off the lighter adapter and connect the wire to 12V. The adapter contains a voltage converter which takes the 12-14V from the vehicle and outputs a lower, regulated voltage for the detector. If you connect the detector directly to vehicle power you will blow it up.
Depending on what detector you have, there may be a hardwire power adapter available for it so you don't have to open up the lighter plug.
The mirror harness is a convenient place to wire into if you are mounting the detector up by the mirror.
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